Haynes and Boone, L.L.P. > Dallas, United States > Firm Profile

Haynes and Boone, L.L.P.
DALLAS, TX 75219-7673
United States

Intellectual property > Trademarks: non-contentious (including prosecution, portfolio management and licensing) Tier 2

Haynes and Boone, L.L.P. advises on the international portfolios of a diverse global range of active trademark clients. The team is headed in Dallas by David Bell, who builds protection plans and trademark enforcement strategies for clients across the financial services, music, apparel, consumer products, restaurants and telecoms sectors. Supported by Jeffrey Becker, who has extensive brand management experience, and advertising and social media issues specialist Erin Hennessy in New York, the group’s comprehensive service extends to international trademark clearance and brand launches and prosecutions around the globe. In Dallas, Purvi Patel Albers handles tech and television and film clients and Tiffany Ferris, who brings expertise in brand promotion, was promoted to partner in January 2022.

Practice head(s):


‘Very friendly attorneys who are excellent at advising clients.’

‘Partner goes to great effort to provide top quality service and establish good relations.’

‘Purvi Albers, Tiffany Ferris – both amazing lawyers, who know our business, and tailor their practice to our needs. They are the best of the best.’

Key clients



Dallas Cowboys

San Antonio Shoe Company

Halliburton Energy Services

Hachette Book Group


VP Racing Fuels


Work highlights

  • Acting as primary trademark counsel for AT&T and representing the company for more than two decades in trademark prosecution and counseling as well as trademark litigation, TTAB oppositions and proceedings.
  • Acting as primary outside trademark counsel to the Dallas Cowboys, handing trademark prosecution and clearance for the company.
  • Acting as primary trademark counsel to oil field service company Halliburton, managing its trademark clearance, preparation and filing of new trademark applications, defense of oppositions before the Trademark Office. Trademark Trial and Appeal Board, and overall strategy.

Finance > Structured finance: derivatives and structured products Tier 3

The derivatives team at Haynes and Boone, L.L.P. advises a broad range of clients, including international banks, private equity funds, hedge funds, and bank holding companies on securities, derivatives, and regulatory matters. Its derivatives expertise extends to hedging derivatives, over-the-counter products, and project finance-related hedging agreements. Practice head Neal Kaminsky is based in Houston and covers compliance with Dodd-France, CFTC, and FERC regulatory requirements. In New York, Giorgio Bovenzi specializes in global credit risk management regarding derivatives. He works alongside Matthew Frankle, a key contact regarding equity financing transactions such as swaps, options, and repurchase agreements, and Brian Sung, who focuses on derivatives and commodities markets, as well as alternatives investments and cryptocurrency. Based in Washington DC, Phil Lookadoo focuses on the energy and project finance derivatives space.

Practice head(s):

Neal Kaminsky

Other key lawyers:

Giorgio Bovenzi; Craig Unterberg; Phil Lookadoo; LeAnn Chen; Matthew Frankle; Brian Sung; Tim Johnston; James Markus; Alex Grishman


‘I have not come across another firm that has both the depth and breadth of expertise that Haynes and Boone has in the field of structured finance. It is invaluable to our business to have a go to firm that we can trust and rely on without a second thought.’

‘Alex Grishman, Matthew Frankle and Brian Sung are the cornerstones of this group. Each one of them has deep subject matter expertise, impeccable work ethic and a perfect combination of legal skills and business sense to get the work done that is need. I do not think that there is a better firm for this kind of work.’

Industry focus > Energy litigation: oil and gas Tier 3

Representing both large corporations and small independent producers across the US, the team at Haynes and Boone, L.L.P. has experience litigating in state and federal courts, and in both domestic and international arbitrations. The group handles a wide range of mandates, including lease termination disputes, midstream disputes and royalty litigation. Practice co-head Craig Stahl manages the firm's The Woodlands office (greater Houston metro area) and has extensive experience in multidistrict litigation and class actions. Fellow practice co-head Michael Mazzone frequently represents energy companies in environmental contamination and toxic tort cases. Michelle Scheffler (who has experience handling federal royalty class actions in a number of states), and David Ammons (up-, mid- and downstream oil and gas litigation) are also recommended. All individuals are based in Houston unless stated otherwise.

Practice head(s):

Craig Stahl; Michael Mazzone

Other key lawyers:

David Ammons; Michelle Scheffler; Jeffrey Keuhnle; Garrett Martin


Subject matter expertise. Very practical. Know the business extremely well.’

Key clients

Ovintiv USA (formerly: Newfield Exploration)

Finley Resources


Tetra Technologies

Hess Corporation

Oasis Petroleum North America

Mewbourne Oil Company

Shell Oil Company

Burlington Resources Oil & Gas Company

Citizen Energy

Work highlights

  • Succcessfully represented Shell Oil Company in a five-week jury trial concerning environmental contamination claims; the plaintiffs claimed personal injury and property damage from an alleged neighbourhood cluster of asthma, lupus and autoimmune diseases.
  • Representing Burlington Resources Oil & Gas Company in a putative class action alleging late royalty payments on thousands of leases in North Dakota.
  • Representing Newfield Exploration Company (now Ovintiv USA) as lead counsel in two cases: the first, a putative class action alleging improper post-production royalty deductions on royalty payments now pending in the United States District Court for the Eastern District of Oklahoma; the second, a precedent-setting matter in which the State of North Dakota claims that it was underpaid royalties on state oil and gas leases in which a take-nothing judgment was secured against the State.

Industry focus > Insurance: advice to policyholders Tier 3

The team at Haynes and Boone, L.L.P. handles claims resolution and litigation as well as negotiation of policies and contractual indemnity terms. The practice includes third-party liability as well as first-party property disputes while also advising clients on insurance and indemnity issues in corporate transactions. Ernest Martin Jr. heads the practice from the Dallas office, and represents policyholders in coverage disputes before state and federal courts in Texas and across the country. Litigator Leslie C. Thorne, based in New York and Austin, is also a key practitioner.

Practice head(s):

Other key lawyers:


‘We had a huge issue with a payer source to Haynes Boone. They assembled the right team and built a case and worked with the payer to solve the issue . We appreciated their guidance and explanations of the legal issues involved. ‘

‘Honesty to tell you the legal options with the consequences of each in a way that was easy to make decisions. They were respected by the payer.’

Key clients

XTO Energy

Boy Scouts of America

Clinical Pathology and Sonic Healthcare USA

Double Diamond

Curtis Park Group, LLC

Lundberg LLC and LDX Solutions

Lamacar, Inc. d/b/a Kelli’s Gift Shop Suppliers

Landry’s, Inc.

Riverside Engineering

Hertz Global Holdings, Inc.

Pioneer Natural Resources



Genesee & Wyoming Railroad Services, Inc. and Atlas Railroad Construction

Balfour Beatty Communities, LLC

TD Williamson, Inc.

Industry focus > Energy litigation: electric power Tier 4

The power litigation group at Haynes and Boone, L.L.P. has a strong presence in the Texas power industry, representing a diverse client base that includes renewable and thermal power generators, investors and lenders, municipal utilities and retail electric providers, among others. The group has an extensive history working on matters connected to the Electric Reliability Council of Texas (ERCOT) and has been particularly active in Winter Storm Uri-related litigation. Practice co-head Leslie Thorne splits her time between New York and Austin; Ben Mesches co-leads the team in Dallas.

Practice head(s):

Leslie Thorne; Ben Mesches

Other key lawyers:

Jason Jordan; Andrew Guthrie


‘The team is highly experienced in energy and one of the best I have ever encountered.’

‘The team at Haynes and Boone has a deep industry knowledge that comes from years of experience across the conventional power space. This experience spans financing, insolvency, regulatory, corporate and disputes practice areas and they draw on this experience in an integrated manner to provide insight and strategic solutions. They are unique because they are able to apply this skill-set in a client-focused way.’

Key clients

Panda Power Funds

Papalote Creek II, LLC (this is a joint venture with RWE)

Southwest Power Pool, Inc.

South Texas Electric Cooperative, Inc. (STEC)

EDP Renewables North America, LLC

NextEra Energy

Tokai Carbon

Contour Global

Ormat Technologies

RWE Renewables Americas, LLC

Work highlights

  • Representing Panda against ERCOT in a case of first impression with respect to Capacity, Demand and Reserves reports relied on for the financing of three gas-fired generating units.
  • Represents multiple clients in relation to mass tort litigation arising out of Winter Storm Uri in Texas.
  • Representing Ormat’s subsidiary Viridity Energy Solutions, a qualified scheduling entity (QSE), in commercial litigation arising out of ERCOT’s demand response programs.

M&A/corporate and commercial > M&A: middle-market (sub-$500m) Tier 4

Industry focus > Healthcare: life sciences Tier 5

Haynes and Boone, L.L.P. offers a strong emphasis on genetics and precision medicine, with a growing presence in the personalized medicine space. It provides IP services for these clients, both in contentious matters and on transactions, such as representing Teneobio in its $900m sale to amgen. The team’s San Francisco office is particularly strong, with team co-head Roger Kuan particularly known for his emerging companies work in the digital health and bioprinting sectors, while Jason Novak is also recommended for patent litigation. Benjamin Pelletier joined from  Venable LLP in January 2021.

Practice head(s):

Roger Kuan; Jason Novak; Benjamin Pelletier; Randy Peak

Other key lawyers:

Michael Smith


‘I’ve enjoyed my time with Jason Novak. He is a caring, empathetic, and committed source of counsel. Jason brings in the right people for our needs at the right time. He is transparent with expectations and clear in direction.’

‘Michael Smith has displayed the same level of professionalism.’

Key clients

TeneoBio, Inc.


InterVenn Biosciences

Volumetric Biotechnologies

Berkeley Lights, Inc.

Mekonos Inc.

Work highlights

  • Represented TeneoBio, Inc. in connection with its acquisition by Amgen.
  • Advised Volumetric in its sale to 3D Systems to help advance research in life science technology and 3D printing.
  • Advising InterVenn Biosciences on ongoing patent portfolio management, prosecution, and counseling.

Labor and employment > Employee benefits, executive compensation and retirement plans: transactional Tier 5

Haynes and Boone, L.L.P. counts domestic and multinational companies across the food and beverages, financial services, retail and energy sectors among its key roster of clients, and handles the executive compensation and employee benefits aspects of high-value acquisitions. From the firm’s Dallas office, Susan Wetzel leads the group and has experience in equity incentive benefit plans, while Chris Kang acts for financial institutions in ERISA-related matters. Houston-based Jesse Gelsomini focuses on tax-qualified pension, 401(k) and ESOP plans.

Practice head(s):

Susan Wetzel

Other key lawyers:

Key clients

Blucora, Inc

CSW Industrials

Enbridge Inc.

Vaalco Energy

Texas Capital Bancshares, Inc.

Paycom Software, Inc.

Performance Food Group Company

Arcosa, Inc.

Tuesday Morning Corporation

Landry’s Inc.

Work highlights

  • Represented Arcosa in its acquisition of StonePoint Ultimate Holding, LLC and its affiliated entities from an affiliate of Sun Capital Partners.
  • Represented CSW Industrials, Inc. in its acquisition of TruAire, Inc.

Finance > Financial services regulation Tier 7

Haynes and Boone, L.L.P. stands out for its work in global credit risk management, where it provides advice to prominent international banks. The team has a particular focus on the regulatory and credit risk aspects of margin loan transactions, and also advises on Basel III capital requirements. Key figures in the team include Giorgio Bovenzi, who specializes in global credit risk management, and Craig Unterberg , who leads on margin loan regulatory work. Both are based in New York.

Practice head(s):

Neal Kaminsky

Other key lawyers:

Giorgio Bovenzi; Craig Unterberg; LeAnn Chen


‘The team has an outstanding grip on the market and has a deep knowledge on banking regulatory matters. They distinguishes themselves from their competitors by virtue of their client-oriented approach, in addition to being extremely technically strong and always on top of the latest regulatory developments in the market.’

‘Giorgio Bovenzi is an absolute star, with truly outstanding regulatory and industry knowledge. He is a very smart individual, and an excellent lawyer who can swiftly grasp and resolve any issue. Giorgio has a well-deserved, sterling reputation with regard to his broad knowledge and in-depth understanding of cross-border banking and financing transactions. I would also like to emphasize the hugely impressive talent for providing precise and detailed technical advice of  Craig S. Unterberg, who stands out for his a profound understanding of fund financing matters. He is a real specialist in the field.’

‘Giorgio Bovenzi is a major asset. Not afraid to tackle the most complex issues head on.’

‘LeAnn Chen is the person I work with most often. She is flexible, demonstrates excellent depth of expertise in several different areas, and always responds in a timely manner. She does not hesitate to raise issues that might be relevant even when not asked specifically to address those issues. Her writing and editing skills are top-notch and she is a pleasure to work with.’

‘Haynes and Boone have throughout the years shown exceptional qualities when it comes to their financial services practice, including being thorough in their analysis and solution-oriented.’

‘Giorgio Bovenzi is highly talented in this field, provides prompt and detailed advice and has an extraordinary network of non-US law firms that can provide relevant advice for the large number of foreign markets in which we provide custody services to our customers. In most cases he is the sole attorney we rely upon.’

‘What makes the Financial services regulation of Haynes and Boone unique is in my view that they are at the forefront of advising financial institutions on how regulatory reform will impact their business. They combine regulatory experience with practical insights.’

‘Craig Unterberg and LeAnn Chen are true experts in their fields. They are responsive, they do a great job identifying issues and coming up with commercial solutions. They are also very knowledgeable on industry practice.’

Dispute resolution > Appellate: courts of appeals / Appellate: supreme courts (states and federal)

In a major development, Haynes and Boone, L.L.P. brought in high-profile appellate specialist Daniel Geyser to lead its US Supreme Court practice. Traditionally a dominant force in the Texas market, the arrival of Geyser — who splits his time between Dallas and Denver — is expected to strengthen the team's national offering.

Intellectual property > Patents: prosecution (including re-examination and post-grant proceedings)

Haynes and Boone, L.L.P.'s practice is able to cover the full gamut of IP matters, including counseling and patent portfolio management services. The group is particularly well known for its work in inter partes review proceedings. David McCombs is the key contact.

Haynes and Boone, LLP is an international corporate law firm with offices in Texas, New York, California, Charlotte, Chicago, Denver, Washington, D.C., London, Mexico City and Shanghai, providing a full spectrum of legal services in energy, technology, financial services and private equity. With 600 lawyers, Haynes and Boone is ranked among the largest US-based firms by The National Law Journal, The American Lawyer and The Lawyer. It was recognized for excellence in the BTI Consulting Group’s 2021 “A-Team” report, which identifies the law firms that in-house counsel commend for providing superior client service.

Managing Partner Taylor Wilsontaylor.wilson@haynesboone.com214.651.5615
Administrative Partner - Austin Rob Lauerrob.lauer@haynesboone.com512.867.8505
Administrative Partner - Charlotte Todd Cubbagetodd.cubbage@haynesboone.com980.771.8250
Administrative Partner - Chicago Laura Beth Millerlaura.miller@haynesboone.com312.216.1625
Administrative Partner - Dallas Tom Harristom.harris@haynesboone.com214.651.5630
Administrative Partner - Denver Dan Malonedan.malone@haynesboone.com303.382.6218
Administrative Partner - Fort Worth Karen Precellakaren.precella@haynesboone.com817.347.6620
Administrative Partner - Houston Ricardo Garcia-Morenoricardo.garcia-moreno@haynesboone.com713.547.2208
Managing Partner - London William Cecilwilliam.cecil@haynesboone.com+44 (0)20 8734.2837
Administrative Partner - Mexico City Edgar Kleeedgar.klee@haynesboone.com+52.55.5249.1873
Administrative Partner - New York Craig Unterbergcraig.unterberg@haynesboone.com212.659.4987
Administrative Partner - Orange County Greg Michelsongreg.michelson@haynesboone.com949.202.3022
Administrative Partner - Palo Alto Gary Edwardsgary.edwards@haynesboone.com650.687.8842
Administrative Partner - Dallas-North Dustin Johnsondustin.johnson@haynesboone.com972.739.6969
Administrative Partner - San Antonio Diana Liebmanndiana.liebmann@haynesboone.com210.978.7418
Chief Representative and Administrative Partner, Shanghai Office Liza Markliza.mark@haynesboone.com+86.21.6062.6183
Administrative Partner - The Woodlands Craig Stahlcraig.stahl@haynesboone.com713.547.2304
Administrative Partner - Washington, D.C. Phil Lookadoophil.lookadoo@haynesboone.com202.654.4510
Administrative Partner - San Francisco Brian Kwokbrian.kwok@haynesboone.com415.293.8901
Jeffrey M. Becker photo Jeffrey M. BeckerPartner
David A. Bell photo David A. BellPartner, Chair – Trademark Practice Group
LeAnn Chen photo LeAnn ChenPartner
Tom Harris photo Tom HarrisPartnerAdministrative Partner – DallasChair – Merger and Acquisitions Practice Group
Tim Johnston photo Tim JohnstonPartner
James Markus photo James MarkusPartner
Purvi Patel Albers photo Purvi Patel AlbersPartner
Scott Thompson photo Scott ThompsonCounsel
Partners : 249
Other Lawyers : 341
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