Patents: prosecution (including re-examination and post-grant proceedings) in United States

Finnegan, Henderson, Farabow, Garrett & Dunner LLP

The team at Finnegan, Henderson, Farabow, Garrett & Dunner LLP has 'a passion for its craft, deep knowledge of the law, inexplicable creativity and great openness for dialogue and discussion with the client'. 'Thorough in identifying options and in then following through', the group is 'very ethical and professional' and impresses with 'responsive' partners. Considered 'a go-to firm for patent prosecution', the practice covers a range of sectors, with the majority of recent highlight matters coming from the life sciences sector, including instructions from clients active in pharmaceuticals, medical devices, biologics and biosimilars. Examples include representing Incyte in two inter partes reviews (IPR): once successfully obtaining a re-hearing after the Patent Trial and Appeal Board (PTAB) had denied institution of Incyte's IPR against a patent claiming deuterated versions of Incyte's Jakafi product and securing a rare grant for discovery for Incyte, and another successfully defending Incyte against institution of a post-grant review filed against the same Jakafi patent. Google relied on the practice for the preparation and prosecution of design patents regarding graphical user interfaces and icons, and also trusts the team with the development of international patent filing strategies to ensure worldwide protection of its design patents. A recent semiconductor highlight was the representation of Taiwan Semiconductor Manufacturing Company ('TSMC') in several IPRs filed by a patent owner against customers of TSMC; the team obtained declarations of invalidity for most of the asserted patents, with two patents moving on to appeal at the Federal Circuit. Managing partner Mark Sweet, chair James Monroe, Patent Office practice leader Adriana Burgy and Atlanta-based PTAB trials section leader Jason Stach fare the key contacts in the practice group. Elizabeth Ferrill, Erika Harmon Arner in Reston, Jill MacAlpine, Boston's Leslie McDonell and Palo Alto's Aaron Capron are also recommended. Also of note, Amanda Murphy and Reston-based Michael Young made partner. Other clients include AbbVie, LG Electronics and Xiaomi. All lawyers are based in Washington DC unless otherwise stated.

Fish & Richardson P.C.

Fish & Richardson P.C. is one of the most active patent prosecution firms in the market. The group fields an especially busy domestic patent application practice group and was the most active counsel for petitioners bringing patent challenges before the PTAB as well as the second most active team defending patent owners against patent challenges at the PTAB. Washington's John Hayden directs the patent practice, which includes post-grant co-chairs Karl Renner, also in Washington, and Dorothy Whelan in the Minneapolis office. Austin's Heather Flanagan, Minneapolis trio Angela Follett, Christopher Hoff and Jennifer HuangDavid HoltNicholas JepsenChristopher Ma and Andrew Patrick in Washington DC, the Dallas-based Sushil IyerTiffany Reiter in Boston and Silicon valley duo Michael Portnov and Michael Shepherd were all promoted to partner.

Foley & Lardner LLP

With Foley & Lardner LLP's 2018 merger with Gardere Wynne Sewell, the practice group now counts among its ranks Dallas-based patent prosecution experts Michael Dubner and Terrell Richard Miller. The group is especially active in the electronics, chemical, biotech and pharmaceutical sectors, both in matters before the PTAB and in patent portfolio development. Led by Pavan Agarwal, the team scored a major victory for Greene's Energy -- a Supreme Court ruling in favor of the client in the landmark decision in Oil States Energy Services, LLC v Greene's Energy Group, LLC, which affirmed the constitutionality of IPRs. Practice head Michele Simkin advised 22nd Century Group on the prosecution of patents for its transgenic tobacco products. Stephen Maebius and Kristel Schorr assisted Daiichi Sankyo as petitioner in an IPR filed against a patent on a therapeutic antibody owned by Alethia. Other names to note include John Lanza and Christopher McKenna in Boston, Mark Kassel in Madison and Joseph Ziebert in the Milwaukee office. San Diego's Christopher Bolten, Boston's Shabbi Khan and Meng Pua, and Tianran Yan joined the partnership. Unless otherwise stated, all partners are based in Washington DC. BASF, Google and Hitachi Automotive Systems also feature on the client roster.

Sterne, Kessler, Goldstein & Fox PLLC

Sterne, Kessler, Goldstein & Fox PLLC in Washington DC has particular strength in the defense of patent owners against challenges brought before the PTAB, but also impresses with its busy caseload representing petitioners in PTAB challenges and its noted prowess in the drafting and filing of patent applications, predominantly domestic ones. In a recent IPR, biotech and chemistry specialist Eldora Ellison successfully defended two of Thermo Fisher Scientific's pharmaceutical patents. Additionally, prison communication service provider GTL instructed the practice in a dispute with its competitior Securus, involving a total of almost fifty proceedings as both petitioner and patent owner. On the patent application drafting and filing side, the group continues to act for Taiwan Semiconductor Manufacturing in matters including the prosecution of patents covering new Bio-FET technology. Other key practitioners include biomedical expert Richard Coller, head of the mechanical and design patent practice Tracy-Gene Durkin, electronics specialist Robert Sokohl, head of prosecution Eric Steffe and founding partner Robert Greene Sterne. Teva Pharmaceuticals, Apple and Broadcom are also clients.

Baker Botts L.L.P.

Baker Botts L.L.P. 'has all the angles covered: technical expertise, tactical expertise, and courtroom expertise'. 'Able to adjust perfectly to the varying experience of inventors', the practice boasts wide-ranging sector expertise, with the technology and electronics sectors accounting for the majority of recent standout matters. In one example, New York duo Robert Meier and Robert Scheinfeld acted for Hitachi in the prosecution of a portfolio of over 1,000 diverse patents, including patents covering consumer electronics, semiconductors and optical systems. New York-based Paul Ragusa, who is 'easy to work with' and has 'a no nonsense approach', led advice for Columbia University on the development and management of its patent portfolio in the physical and life sciences sectors, including patents ranging from audio-visual compression and transmission to biotechnical patents, semiconductor patents and pharmaceutical patents. Scheinfeld and Palo Alto 'star' Eliot Williams ('terrific in the courtroom') joined forces to represent Mastercard in several matters including the successful defense of the client in an appeal at the Federal Circuit following a covered business review proceeding initiated by Leon Stambler regarding a patent covering electronic funds using using cryptographic security. Demonstrating its strength in IPRs, the team secured four victories for Bright House Networks regarding telephone and internet networking patents in the context of district court litigation brought forward by Patent Asset Licensing. Sarah Guske and Wayne Stacy in San Francisco, Hogene Choi and Travis Thomas in Palo Alto, Washington DC-based Luke Pedersen and Steve Lendaris in New York are also noted. Barton Showalter directs the practice from the Dallas office, and Michael Sartori joined the team from Venable LLP. Other clients include Cisco, Brother Industries and Halliburton.

Cantor Colburn LLP

Cantor Colburn LLP stands out as one of the most active prosecution practices in the country. Primarily based in Hartford, the IP boutique excels in utility and design patents alike, with recent highlights coming from major electronics, chemical and computer science players. Co-managed by Michael Cantor and Phil Colburn, the team also includes Leah Reimer and Pamela Curbelo as co-chairs of the chemical, materials and life sciences practice; David Fox and Keith Murphy as co-chairs of the electrical-mechanical group; head of the life sciences practice and former Locke Lord LLP practitioner Bryan Zerhusen; and post-grant practice head Andrew Ryan. Alexandria's Dan Drexler directs the design patent practice, while Jim Merrick and Daniel Lent lead the Korean and Japanese practice groups respectively. Dave Christensen and newly promoted partners Eric Baron and Alexandria-based Jenae Gureff are also recommended. Jason Radachy and Duane Minley in Atlanta were promoted to counsel. Susan Zerull joined the Troy office as counsel from Dow Chemical, counsels Brook Lafferty and Douglas Weinstein joined in Atlanta from Merchant & Gould PC, and Alexandria-based counsel Leo Gureff joined from Muncy, Geissler, Olds & Lowe. Susan Doughty retired.

Fenwick & West LLP

Fenwick & West LLP has a varied practice group with experience ranging from electronics- and technology-related instructions to mandates involving medical devices and pharmaceuticals. Intellectual property head Rajiv Patel and patent practice chair Michael Farn, both in the Mountain View office, advised electronic design automation player Synopsys on the management and development of its patent portfolio, including worldwide prosecution. Patel also assisted AirBnB with the prosecution of patents covering interaction-related and analytical applications to enable the site to launch new services. A recent highlight from the start-up sector saw Antonia Sequeira advise DeepMap on the growth of its patent portfolio, including patents that cover high-definition maps for autonomous vehicles. Trace Genomics, a start-up conducting rapid micro-biome testing and data analysis also relied on Sequeira for the development of its patent portfolio. San Francisco's Michael Sacksteder and Stuart Meyer jointly lead the post-grant proceedings practice. Robert Hulse is also noted. Other clients include Mynosys Cellular Devices, Tile and Dropbox. Robert Sachs left to found Robert R. Sachs PC.

Knobbe Martens Olson & Bear LLP

Knobbe Martens Olson & Bear LLP impresses with 'a deep bench of technical and legal experts'. The intellectual property giant is adept in the preparation and filing of domestic and foreign patent applications, but also boasts a busy PTAB caseload. A significant number of instructions comes from pharmaceuticals and medical device players, with recent standout matters including advising Retrotope on a patent portfolio covering drugs for the preservation and restoration of mitochondrial health in degenerative diseases. William Zimmermann in Washington DC, Michael Fuller and Kerry Taylor successfully defended Illumina Cambridge against two IPR petitions regarding a patent in relation to DNA sequencing. The group is also experienced in the acquisition of patent portfolios that it helped to develop, an example of which included assisting with the development of Claret Medical's patent portfolio and subsequent due diligence prior to its $220m acquisition by Boston Scientific. Other key figures include managing partner Steven Nataupsky, Mark Gallagher, John Paik and Ed Schlatter in Irvine, Mark Abumeri and Gerard von Hoffmann. Ignyta, Orexigen Therapeutics and Millipede also feature on the client roster. Brenton Babcock joined Womble Bond Dickinson. All partners are based in San Diego unless otherwise stated.

McDermott Will & Emery LLP

The team at McDermott Will & Emery LLP is 'extremely knowledgeable of the science behind the patents and also has a strong understanding of the marketplace'. The arrival of Kristina Bieker in Boston bolstered the group's capabilities in the life sciences space -- one of the its key sectors. Recent highlights include advising Applied Therapeutics on its IP strategy, licensing and sponsored research, in addition to assisting the client with various corporate matters. The practice's other focus lies in the technology sector, where standout instructions include assisting gaming company Electronic Arts with patent application drafting and examination strategies. Also in the tech industry, the team assists Google with the management of portions of its patent portfolio related to its network infrastructure, including data centers and network access strategies and cloud computing offerings. Also recommended are Edward GordonKristin Connarn, and Robert Underwood in Boston; Judy Mohr in Silicon Valley; Ahsan Shaikh, who is based in Chicago and Silicon Valley; and Michael Fogarty and Hosang Lee in Washington DC. Clients also include ZTE, Sandoz and Cornell University. Michael DreznesMark ItriSoyeon Pak LaubJohn MagluyanAndrew MickelsenNathan SmithKenneth CheneyBrent HawkinsHersh MehtaKevin Shortsle and Krista Vink Venegas left the firm for Morgan, Lewis & Bockius LLP.

Banner & Witcoff, Ltd.

Banner & Witcoff, Ltd. has particular strength in the procurement of design patents and continues to grow its utility patent practice. The recent caseload shows a varied sector spread, ranging from the insurance and financial services sectors to the technology, electronics and retail sectors. Standout instructions include prosecuting a variety of patents for Brother Industries, including patents covering network systems, printer cartridges and image recording, and processing for multi-function devices and tape-reading devices. The group is among the most active PTAB practices in the market for petitioners, but also acts for patents owners, an example of which included the successful defense of Nike in two IPRs filed by Skechers regarding design patents for Nike's Free outsole designs. Contacts include Joseph BerghammerBinal Patel and Christopher Renk in Chicago, and Ross DannenbergJohn Hutchins (who recently joined from Hunton Andrews Kurth LLPFrederic MeekerChristopher McKeeRobert Katz and Joseph Potenza in Washington DC. Shawn Gorman left for Axon to become its Director of Intellectual Property. Honeywell, Shure and Comcast also feature on the client list.

Birch, Stewart, Kolasch & Birch, LLP

The Virginia-based prosecution team at Birch, Stewart, Kolasch & Birch, LLP is especially active in the area of life sciences, but also demonstrates strength in the electronics, mechanical and technology sectors. In matters before the PTAB, the group fields a particularly busy caseload consisting of IPRs and covered business method reviews. The key names are life sciences experts MaryAnne ArmstrongCraig McRobbie and Gerald Murphy, as well as James Eller, who specializes in mechanical and electro-mechanical patents.

Kilpatrick Townsend & Stockton

Kilpatrick Townsend & Stockton boasts wide-ranging sector expertise and a strong patent drafting and application practice in addition to a busy PTAB practice. In addition to prosecuting fintech patents for Visa and managing Visa's patent portfolio, the team also represented Celanese as petitioner in three IPRs regarding patents for the production of acetic acid, securing three victories before the PTAB with two proceedings having moved on to the Federal Circuit. Further, GoPro entrusted the analysis of design and utility patents to the group. Key names include intellectual property chair Wab Kadaba in Atlanta; chemistry and life sciences co-chairs Matthew Hinsch in San Francisco and Charles Calkins in Winston-Salem; San Francisco's Paul Haughey; electronics and software practice leaders Brenda Holmes in Atlanta and Craig Largent in Silicon Valley; and Kristin Doyle and Babak Kusha, based in Atlanta and San Francisco respectively, who co-chair the medical and mechanical devices team. James Sze joined the San Diego office from Ballard Spahr LLP, and Arriènne Lezak left for Polsinelli PC. John McDonald retired. CoxCom, Novelis and Wells Fargo also feature on the client roster.

Morrison & Foerster LLP

Morrison & Foerster LLP focuses on the technology, life sciences and consumer product sectors. A standout feature is the group's experience of agriculture patents, including plant patents, and its track record of advising on plant variety protection certificates and plant breeders rights; practice head Michael Ward is the key figure in this area. Jonathan Bockman in the Northern Virginia office directs the East Coast patent prosecution group, while Los Angeles' Mehran Arjomand leads the IPR and post-grant practice. Peng Chen joined Rimon PC.

Venable LLP

Venable LLP merged with Fitzpatrick, Cella, Harper & Scinto in autumn 2018, combining Fitzpatrick, Cella, Harper & Scinto's strength in patent prosecution with the acquiring firm's wider geographical footprint and service offering. Instructions often come from life sciences clients, but the team is also adept at advising on electronics and technology patents. The group is primarily known for its PTAB practice, directed by Justin Oliver in the Washington DC office. For Canon, the group recently secured a precedential PTAB decision regarding follow-on IPR petitions, defeating petitioner General Plastic Industrial. Counsel Benjamin Pelletier joined the San Francisco office from Arnold & Porter. Former patent chair Michael Sartori joined Baker Botts L.L.P.. Steven Schwarz joined Johnson & Johnson as senior patent counsel.


WilmerHale's prosecution team focuses on the life sciences and technology sectors, combining a busy PTAB caseload with a solid patent drafting and application practice. In a recent highlight, a team led by David Bassett in New York joined forces with a team from Fish & Richardson P.C. to successfully defend Gilead against an IPR filed by I-MAK, the tenth IPR petition filed by I-MAK against patents covering Gilead Sciences' Hepatitis C products, including the blockbuster drugs Sovaldi®, Harvoni® and Epclusa®. Donald Steinberg directs the IP practice from the Boston office. Fellow Bostonian Monica Grewal and Washington DC's David Cavanaugh chair the post-grant proceedings group. Also of note, Boston's Andrew Danford and Heather Petruzzi in Washington DC made partner. Mary Rose Scozzafava and Wayne Stoner retired. Clients also include AbbVie, Akamai Technologies and Genentech.

Arent Fox LLP

Arent Fox LLP has 'the capability to provide services covering all aspects of IP', making it 'a great all-around partner'. The group is especially active for domestic clients, but also fields a solid practice for clients from abroad. Craig Gelfound in Los Angeles and James Bindseil manage a significant portion of Qualcomm's patent portfolio, including patents covering 5G mobile networks. Further, Wilburn Chesser supervised patent prosecution work for Becton Dickinson, ranging from integrated analytics solutions to medication and supply management and surgical instruments, while Richard Berman assisted with the prosecution of patents covering infection prevention, respiratory care and interventional specialties. Richard LaCava directs the practice group from New York. Other key clients include Microsoft, General Electric and Vale. All lawyers are based in Washington DC unless otherwise stated.

Arnold & Porter

The team at Arnold & Porter shoulders a varied caseload in the life sciences sector. Recent standout instructions include assisting Monsanto with the prosecution of patents covering transgenic plants and traditionally bred plants, involving multiple appeals and multi-party opposition proceedings in the US and abroad. Further, Sandoz instructed the group to represent it before the PTAB in eight IPRs filed against AbbVie patents covering Humira; the team also acted in the subsequent appeal before the Federal Circuit. Other clients include Bayer, medical device player Bruin Biometrics and Water Street Healthcare. Deborah Fishman in Silicon Valley and David Marsh form the heart of the practice. Matthew Wolf directs the intellectual property group, and Kristen Riemenschneider recently made partner. Counsel Todd Lorenz joined Squire Patton Boggs. All partners are based in Washington DC unless otherwise stated.

Baker & Hostetler LLP

Noted for its 'strong expertise', Baker & Hostetler LLP impresses with its 'responsiveness' and its 'practical, business-oriented guidance'. The recent caseload shows broad sector coverage with the manufacturing and technology sectors at the core. Multi-industry manufacturing giant SPX Corporation instructed the team in relation to the prosecution of domestic and international patents, in addition to the management of its patent portfolio. Cybersecurity and communications player LGS Innovations, Apple and Nordson also feature on the client roster. The names to note are practice head Kenneth Sheehan, John Weber and the 'very capable' Tayan Patel, who is 'accessible' and 'adept at working efficiently and within budget'. Hussein Akhavannik is also recommended. Paul Larson left the firm. All named lawyers are based in Washington DC.

Baker McKenzie LLP

Baker McKenzie LLP has particular strength in the electronics, software, chemical and healthcare sector, and often acts for clients from outside the US, an example of which is South Korean gelatin producer Sammi Industrial. Domestic companies, often with an international footprint, also instruct the team. A recent IPR highlight was the representation of Hyundai in ten IPRs filed against Michigan Motor Technologies (MMT) in response to a patent infringement filed by MMT. The firm's main offices are in Dallas and Washington DC, with key names including the Texas-based Brian McCormack, John Flaim and William McSpadden, and Richard Wells, James Pak and recently promoted partner Matt Dushek in the Washington DC office. Practice head Mackenzie Martin is based in Dallas. Rosetta Stone, Schlumberger and Apergy also feature on the client list.


The 'exceptional' team at Dentons is 'solid from top to bottom'. 'Each team member is solid on technology, but also has an excellent legal mind, knowing how to use the legal tools available to get the best outcome for their clients'. The 'well-functioning, creative and thoughtful' group often is especially active in international portfolio management and patent prosecution, an example of which included advising Citigroup on the management of a portfolio of several hundred patent applications covering software, business methods, mobile payments and currency exchange innovations, among others technologies. Boasting wide-ranging sector expertise, the practice assists a diverse list of clients, including Monsanto, Adobe Systems, Columbia University and Massachusetts Mutual Life Insurance Company. Robert Hanson in Dallas and Washington DC's Eric Sophir co-chair the intellectual property and technology group. Peter Yim in San Francisco is 'a genius patent strategist, constantly thinking ten moves ahead of the opposition'; indeed, he is an 'extremely rare patent lawyer who understands at depth how patent issues play out before the Patent Office and in litigation'. The arrival of former Perkins Coie LLP practitioners Manny Joseph Caixero in Los Angeles, and Steven Lubezny and Timothy Carroll in Chicago bolstered both the group's prosecution bench and its PTAB offering. Josh Curry joined Lewis Brisbois Bisgaard & Smith LLP and William Long left for Smith, Gambrell & Russell, LLP.

Jones Day

Jones Day impresses with a strong PTAB practice and a deep bench of life sciences and technology specialists. The group acts for patent owners and petitioners alike in IPRs and covered business method reviews, and recently secured a major Supreme Court victory for SAS Institute, wherein the court ruled that the PTAB must issue a final decision on every patent claim challenged by a petitioner. The practice also successfully defended AbbVie against an IPR filed by Sandoz regarding a patent covering AbbVie's antibody therapeutic, adalimumab, sold as Humira, the world's best-selling drug. Anthony Insogna in San Diego directs the global intellectual property practice, while San Diego-based Tamera Weisser and New York-based Adriane Antler co-chair the global prosecution group. Newly promoted partner Matthew Johnson in Pittsburg leads the PTAB practice together with Gasper LaRosa in New York. Other key names include Cleveland's David Cochran and New York-based Vishal Khatri, who also recently made partner. Michael Hendershot joined the team from Paul Hastings LLP. Other clients include Canon, Qualcomm and Celgene.

Morgan, Lewis & Bockius LLP

Morgan, Lewis & Bockius LLP recently added to the team former McDermott Will & Emery LLP prosecution experts Mark Itri, Michael Dreznes, Soyeon Pak Laub, John Magluyan, Andrew Mickelsen and Nathan Smith; post-grant specialist Kenneth Cheney in the Orange County office; Brent Hawkins in San Francisco; Chicago trio Hersh Mehta, Kevin Shortsle and Kristen Vink Venegas; and Hosang Lee in Washington DC. Life sciences, electronics and technology matters are at the heart of the practice. In a recent mandate, a team including Washington DC's Robert Smyth, Philadelphia-based deputy practice head Louis Beardell, practice leader Eric Kraeutler also in Philadelphia, and John Gorman in the Wilmington advised Acerta Pharma on the worldwide prosecution of patents. Newly promoted partners include Jason Gettleman and Liying Sun in Silicon Valley, and Dana Gross and Janice Logan in Washington DC. Finch Therapeutics, SanDisk and Synthetic Biologics are also among the team's clients.


Virginia-based Oblon is among the most active patent filers in the market and is particularly well known for acting for foreign clients. The practice's deep bench allows for wide-ranging sector coverage, with a particularly busy caseload in the chemical, electrical and mechanical, and pharmaceutical and medical device sectors. In an example of a typical highlight, Jacob Doughty joined forces with Tokyo-based Yuki Onoe to advise Japanese imaging and electronics manufacturer Ricoh on the prosecution of a significant number of patents covering chemical technologies. A standout domestic matter was the prosecution of several patents for Children's National Health System, a pediatric hospital in Washington DC. Aisin Seiki, BASF and Essilor are also clients. Managing partner Philippe Signore, Richard TreanorSurinder SacharTodd Baker, senior partner Richard Kelly and Colin Harris are the main practitioners. Michael Casey joined from Davidson, Berquist, Jackson & Gowdey, while Bradley Lytle, Andrew Harry, James Kulbaski, Zachary Stern and Masahito Yokoyama left to found Xsensus. Additionally, Stephen Kunin joined Maier & Maier PLLC and Thomas Fisher joined Cozen O'Connor.

Pillsbury Winthrop Shaw Pittman LLP

Pillsbury Winthrop Shaw Pittman LLP acts for domestic and international clients alike, with a strong focus on patents regarding electrical engineering and chemical innovations. A recent technology highlight was advising ALTR Solutions on the development of its patent portfolio, securing several blockchain-related patents for the client. Before the PTAB, the group represented petitioner Anheuser-Busch in a derivation proceeding regarding aluminium bottle manufacturing. Practice head Jack Barufka is based in Washington DC, while Patrick Doody heads the PTAB practice from the Northern Virginia office. Austin's Michael Chibib and Josh Tucker, who splits his time between the Austin and Silicon Valley offices, are also recommended. Raj Davé left to found Davé Law Group.

Wolf Greenfield & Sacks

East Coast IP boutique Wolf Greenfield & Sacks combines an impressive patent drafting and application caseload with one of the most successful PTAB practices in the US. Nathan Speed and post-grant practice head Richard Giunta joined forces to secure a precedent-setting Federal Circuit victory for Cirrus Logic in an inter partes reexamination appeal against a competitor. Managing partner Timothy Oyer advises Oxford Nanopore on the management of its patent portfolio and provides strategic guidance on the prosecution of core technology patents both in the US and abroad. Other clients include Becton Dickinson, Google and Shire. All named partners are based in Boston, though the firm also has an office in New York.

Brinks Gilson & Lione

IP boutique Brinks Gilson & Lione demonstrates particular strength in the automotive and chemical sectors and recently bolstered its life sciences bench with the partner promotions of Joshua Ney in Ann Arbor and Durham duo Amy Fix and Mark Jenkins, who between them cover biotechnological, chemical and pharmaceutical patents. Chicago's James Naughton advised medical device player Cook Group on the prosecution of patents covering mechanical, manufacturing, polymers and metallurgy technologies. Hyundai and Kia also rely on the group's prosecution expertise, while Continental Automotive Systems instructed the team in a Federal Circuit Appeal subsequent to an IPR regarding a patent covering technology used in tire pressure monitoring. Excalibur, Gilead Sciences and Thermo Fisher are also clients.

Buchanan Ingersoll & Rooney

Buchanan Ingersoll & Rooney in Alexandria handles a particularly strong range of work for foreign clients, but also has a solid track record in patent prosecution for domestic companies. Electrical and mechanical engineering, and chemistry are the group's mainstays, but medical devices also account for a significant portion of prosecuted patents. William Rowland directs the patent prosecution group, and Todd Walters sits at the helm of the patent office litigation group.

Cooley LLP

Cooley LLP assists a broad range of life sciences clients with patent portfolio management and development. The team's recent work ranges from advising biotechnology player Allogene Therapeutics on the prosecution of its immuno-oncology patents, to assisting Freedom Innovations with the strategic development of its 20-brand lower limb prosthetics patents. Additionally, Myovant Sciences instructed the group in relation to the prosecution of patents covering women's health innovations, including uterine fibroid and endometriosis treatments. Other clients include Common Sensing, CS Disco and DroneUp. Practice head Ivor Elfiri in New York and Mika Reiner Mayer in Palo Alto are key figures in the practice group.

Eversheds Sutherland

'Timely and efficient', Eversheds Sutherland impresses with 'high-quality legal work and excellent case management'. Domestic matters, especially in relation to electrical, mechanical and chemical innovations, are at the heart of the caseload, but the group is increasingly visible in cross-border matters. Recent highlights include advising Georgia-Pacific on the prosecution of new patents covering inventions for the client's key ranges in paper products and related products. Clients also include MicroCHIPS, Southern Spine and Magnolia Liquefied Natural Gas. Daniel Warren provides 'exceptional, knowledgeable and timely service' and Malvern Griffin is noted for providing 'exceptional client service'. Peter Pappas directs the practice group. Counsel James Duncan joined the Houston office from Akin Gump Strauss Hauer & Feld LLP; all other named practitioners are based in Atlanta.

Hunton Andrews Kurth LLP

The 'outstanding lawyers' at Hunton Andrews Kurth LLP are particularly strong in the automotive sector, but also assist with mandates from the consumer goods, pharmaceuticals, technology and electronics sectors. Created by the merger of Hunton & Williams and Andrews Kurth Kenyon in spring 2018, the group undertakes classic patent application drafting and filing work, but also has a solid track record in post-grant proceedings. Shawn O’Dowd led the prosecution of a high number of patents for Toyota, including advice on strategic patent portfolio questions. Other work came from Nichia, Emory University and Ingenious Designs. New York's John Flock and Tyler Maddry, and Michael Oakes in Washington DC form the trio at the head of the practice. Counsel David Bradin is also recommended. Ping Wang and Michael Ye joined Morris, Manning & Martin, LLP, and John Hutchins joined Banner & Witcoff, Ltd..

Leydig, Voit & Mayer Ltd.

Leydig, Voit & Mayer Ltd. is a one-stop-shop for intellectual property matters, leveraging expertise in a range of industry sectors. The recent expansion of the group's office network to Colorado strengthened the prosecution offering for life sciences patents and patents covering chemical and physics inventions, as former Lathrop & Gage LC practitioners Stephen Barone and Gary Chapman moved to the new Boulder office alongside counsels Sally Sullivan and Michael Curtis. Practice head John Kilyk and Charles Mottier operate from Chicago. Huawei, Cabot Microelectronics and Samsung Electronics are key prosecution clients.