Ms Diane Sullivan > Weil, Gotshal & Manges LLP > Princeton, United States > Lawyer Profile
Weil, Gotshal & Manges LLP Offices
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17 HULFISH STREET, SUITE 201
PRINCETON, NJ 08542
NEW JERSEY
United States
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Ms Diane Sullivan
![Diane Sullivan photo](/wp-content/themes/legal-500-main/default-lawyer-profile.jpg)
Position
Partner
Career
Diane Sullivan is a renowned trial attorney, specializing in “first-of-kind,” “bet-the-company,” or otherwise high-profile matters that have garnered extensive media coverage across a range of practice areas and industries. She is routinely retained as lead trial counsel in high-stakes litigations. Diane has successfully tried cases for Fortune 500 companies in complex commercial, mass tort, class action, antitrust, patent, and environmental litigations in jurisdictions around the U.S. She has represented some of the biggest, most recognizable companies across industries, including Johnson & Johnson, Altria, AstraZeneca, Baxter Healthcare Corporation, Campbell Soup Company, ESPN, ExxonMobil, Frontier Communications, General Electric, GlaxoSmithKline, Merck, Philip Morris USA, Procter & Gamble, Repsol, SAC Capital, Sanofi, Toyobo, and Walgreens.
Memberships
New Jersey Bar; New York Bar; DC Bar; admitted to practice before several federal courts.
Education
Fairfield University (BA, 1984); University of Pennsylvania Law School (JD, 1987).
Lawyer Rankings
United States > Dispute resolution > Product liability, mass tort and class action - defense: consumer products (including tobacco)
(Leading lawyers)‘Creative and innovative in approach’, Weil, Gotshal & Manges LLP blends deep subject matter knowledge with exceptional strategic litigation prowess, and is a popular choice for leading consumer brands to handle large-scale product liability actions. As a ‘very effective litigator’, group co-head Diane Sullivan is regularly involved in bet-the-company litigation and has recently worked alongside the firm’s insolvency team to advise clients on exposure to potential tort and product liability claims through the so-called ‘Texas Two-Step’ bankruptcy legal maneuver. Recognized as a ‘good problem solver’, Theodore Tsekerides has also been involved in high-profile bankruptcy proceedings emanating from product liability claims, and worked with Sullivan in connection with the bankruptcy proceedings of J&J’s talc supplier, Imerys Talc America, which involved indemnity claims relating to talc claims liability. Washington DC-based individual Arianna Scavetti has gained a strong reputation advising manufacturers, including those within the food and beverages space, on consumer protection class actions brought by plaintiffs alleging false or misleading product labeling and marketing. Silicon Valley-based partner David Singh co-heads the product liability and mass tort group alongside Sullivan and regularly handles class actions including the defense of clients against allegations of false and deceptive advertising.
United States > Dispute resolution > Product liability, mass tort and class action - defense: pharmaceuticals and medical devices
(Hall of Fame)Drawing upon the expertise of litigators with product liability and consumer class action experience, as well as those with overarching commercial disputes prowess, Weil, Gotshal & Manges LLP provides ‘creative and innovative’ legal strategies to pharmaceutical clients fending off potentially-brand threatening plaintiff challenges. The firm is able to advise on matters from cradle to grave, including on risk management processes, discovery and motions through to trial and appeal. New Jersey-based trial expert Diane Sullivan is one such lawyer who is in demand for her exceptional advocacy skills and ability to provide highly persuasive arguments to juries, often involving highly technical scientific information, and is regularly parachuted in on the eve of high-profile bellwether MDL trials. Recognized as an ‘excellent problem solver’, New York-based Theodore Tsekerides ‘executes and resolves’, both at a trial stage, as well as in relation to the overarching litigation strategy. On the West Coast, Silicon Valley-based David Singh co-heads the team with Sullivan and has experience of handling false advertising consumer class actions in the sector.
United States > Dispute resolution > Leading trial lawyers
(Leading trial lawyers)Diane Sullivan at Weil, Gotshal & Manges LLP, who operates between New Jersey and New York, is a leading trial lawyer in the area product liability and environmental mass torts, but also has a wide-ranging and versatile practice across commercial, antitrust, patent, mass tort, and class action cases. Sullivan appears in cases which are often groundbreaking in their respective industry, a recent example of which was securing victory in an important plaintiff patent infringement jury verdict. This trial for Altria and Philip Morris USA against competitor RJ Reynoldsworth had ramifications for the future of the e-vapor technology industry.
United States > Dispute resolution > General commercial disputes
(Hall of Fame)Weil, Gotshal & Manges LLP fields a deep bench of ‘top tier talent’ that is adept across the entire breadth of commercial litigation, frequently handling class actions in state and federal courts across the United States. Consumer fraud, unfair competition, alter ego liability, insurance, trade secrets litigation, and alleged violations of federal RICO or antitrust laws are among the core pillars of the group’s practice. New York’s David Lender and Gregory Silbert jointly chair the department alongside Washington DC-based Andrew Tulumello. Lender continues to litigate complex business-critical cases, including successful representing several minor league baseball teams as lead trial counsel in connection with significant breach of contract and antitrust litigation brought against Major League Baseball, while trial lawyer Tulumello routinely tries cases before every level of the court system in the United States. Diane Sullivan is based in New Jersey and is a key name when it comes to all aspects of commercial, antitrust, patent, mass tort, and class action cases. Chantale Fiebig is another important contact within the firm’s Washington DC office.
United States > Dispute resolution > Product liability, mass tort and class action - defense: toxic tort
With a robust bi-coastal disputes offering which draws from strong core toxic tort/product liability expertise as well as broader general complex commercial litigation prowess, Weil, Gotshal & Manges LLP is regularly seen in high-profile class action and MDL litigation in venues throughout the country, including many traditionally plaintiff-friendly jurisdictions. In addition to being well-versed in leading the overarching strategy on cases involving accusations of damage caused by toxins in the soil, air and water, as well as a result of topical and oral use, the team is frequently brought in on the eve of important bellwether trials, often where another firm is national coordinating counsel. In this regard, New Jersey-based litigator Diane Sullivan regularly achieves success in bet-the-company trials in mass tort cases throughout the country, including in cases involving first-of-its-kind, novel issues of law. Along with Silicon Valley-based co-head David Singh, Sullivan recently successfully represented Burger King in a high-profile case brought by a class of plaintiffs regarding “forever chemicals” in the packaging. An ‘excellent problem-solver’, New York-based Theodore Tsekerides is also recommended and has recently been integral to the firm’s work for Johnson & Johnson regarding its liability in relation to asbestos poisoning in its talc products, particularly in light of his combined product liability and toxic tort and restructuring expertise.
Lawyer Rankings
- General commercial disputes United States > Dispute resolution
- Hall of Fame United States > Dispute resolution > Product liability, mass tort and class action - defense: pharmaceuticals and medical devices
- Hall of Fame United States > Dispute resolution > General commercial disputes
- Leading lawyers United States > Dispute resolution > Product liability, mass tort and class action - defense: consumer products (including tobacco)
- Leading trial lawyers United States > Dispute resolution
- Leading trial lawyers United States > Dispute resolution > Leading trial lawyers
- Product liability, mass tort and class action - defense: consumer products (including tobacco) United States > Dispute resolution
- Product liability, mass tort and class action - defense: toxic tort United States > Dispute resolution
- Product liability, mass tort and class action - defense: pharmaceuticals and medical devices United States > Dispute resolution
Top Tier Firm Rankings
- Finance > Capital markets: debt offerings
- M&A/corporate and commercial > Corporate governance
- Labor and employment > Employee benefits, executive compensation and retirement plans: transactional
- Environment > Environment: transactional
- Dispute resolution > General commercial disputes
- Tax > International tax
- Dispute resolution > Leading trial lawyers
- Dispute resolution > Leading trial lawyers
- Dispute resolution > M&A litigation: defense
- M&A/corporate and commercial > M&A: large deals ($1bn+)
- Antitrust > Merger control
- Intellectual property > Patents: licensing
- Finance > Restructuring (including bankruptcy): corporate
- Media, technology and telecoms > Technology transactions
- Tax > US taxes: non-contentious
Firm Rankings
- Media, technology and telecoms > Advertising and marketing: litigation
- Finance > Capital markets: equity offerings
- Intellectual property > Copyright
- Tax > Financial products
- Media, technology and telecoms > Media and entertainment: litigation
- M&A/corporate and commercial > Private equity buyouts: large deals ($500m+)
- Dispute resolution > Product liability, mass tort and class action - defense: consumer products (including tobacco)
- Dispute resolution > Product liability, mass tort and class action - defense: toxic tort
- Dispute resolution > Securities litigation: defense
- Industry focus > Sport
- Finance > Structured finance: securitization
- Intellectual property > Trade secrets (litigation and non-contentious matters)
- Labor and employment > Workplace and employment counseling
- Finance > Capital markets: high-yield debt offerings
- Antitrust > Civil litigation/class actions: defense
- Energy > Energy transactions: oil and gas
- Labor and employment > Labor and employment disputes (including collective actions)
- Healthcare > Life sciences
- Intellectual property > Patents: litigation (full coverage)
- Investment fund formation and management > Private equity funds (including venture capital)
- Dispute resolution > Product liability, mass tort and class action - defense: pharmaceuticals and medical devices
- Real estate > Real estate
- Real estate > Real estate investment trusts (REITs)
- Media, technology and telecoms > Telecoms and broadcast: transactions
- Intellectual property > Trademarks: litigation
- Dispute resolution > Appellate: courts of appeals / Appellate: supreme courts (states and federal)
- Finance > Commercial lending
- Dispute resolution > Corporate investigations and white-collar criminal defense