Williams & Connolly LLP

IAM Research

The Patent 1000 focuses exclusively on patent practice and has firmly established itself as the definitive 'go-to' resource for those seeking world-class legal patent expertise.

Gold - Firms: litigation

“The team at Williams & Connolly are high-level strategic thinkers who are able to see the forest from the trees. Its practitioners are excellent at handling complex trials involving many expert witnesses, as they have the scientific background to both speak the language of the expert and the language of the judge. They are client oriented and make life much easier for in-house counsel.” The firm is scarcely rivalled when it comes to life sciences litigation, thanks to the expertise of David Berl and Jessamyn Berniker. “David is a terrific litigator. He is highly skilled, experienced, thorough and offers a first-class service.” He represents pharmaceutical giants Teva, AstraZeneca and Pfizer in high-stakes patent litigation. Berniker is also called upon by AstraZeneca to handle its most important matters. She has more than 20 years of experience litigating complex life sciences cases. Also highly rated are Dov Grossman, Stanley Fisher, Bruce Genderson and Thomas Selby. “Dov is an excellent patent litigator. He is always available, responsive and detail oriented, and his fees are reasonable.” Fisher and Genderson were recently successful in representing Merck Sharp & Dohme in a major Hatch-Waxman litigation. The pair are both veteran first-chair trial lawyers, who regularly handle high-profile disputes. Selby’s practice combines both litigation and licensing work for patrons such as Dropbox and Pfizer. He is currently working with Berl to defend Pfizer against allegations of infringement. Making their debut in the guide this year are Adam Harber and Andrew Trask. Both rising stars support many of the world’s leading technology companies. In the past year Harber and Trask successfully defended Google in a patent infringement suit, and they are currently preparing to represent Samsung in the Eastern District of Texas.

Gold - Firms: litigation

& Connolly LLP (Washington DC) Mr David Berl Ms Jessamyn S Berniker

Firm Profile

Williams & Connolly’s reputation for handling ‘bet-the-company’ civil litigation at the trial and appellate levels applies equally to the firm’s thriving intellectual property practice. Major corporations including Google, AstraZeneca, Dropbox, Roche/Genentech, Samsung, Pfizer, Intel, Eli Lilly and many others place their trust in Williams & Connolly litigators to handle major intellectual property matters, particularly in patent litigation and related licensing disputes.

About 50 Williams & Connolly attorneys devote a substantial portion of their practice to patent cases, including 16 former clerks of the United States Court of Appeals for the Federal Circuit. Many of our lawyers practising in this area have science degrees, and 14 have been admitted to practise before the United States Patent and Trademark Office.

A major part of Williams & Connolly’s patent litigation practice is representing pharmaceutical companies in Hatch-Waxman pharmaceutical patent litigation.

Williams & Connolly has handled over 100 IPR proceedings, including numerous concurrent with district court proceedings in Hatch-Waxman cases.


A major part of Williams & Connolly’s patent litigation practice is representing brand-name pharmaceutical companies in Hatch-Waxman and pharmaceutical patent litigation brought under the Biologics Price Competition and Innovation Act against competitors seeking to sell generic and biosimilar versions of brand companies’ drugs. Over the years, the firm has achieved significant successes for many companies in these disputes and others involving a diverse array of highly successful drugs, prevailing numerous times at trial and in the Federal Circuit.

Electronics and software

The firm handles major patent and licensing matters in the electronics and software fields. The firm routinely serves as counsel in trial courts and the Federal Circuit, as well as in international arbitrations, on behalf of major technology firms including Samsung, Google, Dropbox, Acer, ASUS, Motorola, AOL and Intel.

Medical and mechanical devices

The firm has handled or is handling a number of significant patent and licence disputes concerning a wide variety of devices, including surgical instruments for cancer diagnosis and treatment, implantable defibrillators, marine seismic survey technology, laser hair removal equipment and biosensors for blood testing.

Inter partes review/patent office disputes

The firm has handled close to 100 inter partes review proceedings before the US Patent and Trademark Office, and our lawyers currently serve as lead counsel in a number of inter partes reviews for both patent owners and petitioners. Many of the inter partes reviews handled by the firm involve parallel district court litigation. The firm has served as counsel in other patent office proceedings of strategic importance to the firm’s clients, including interferences.

Other proceedings

William & Connolly’s patent experience is also brought to bear in other contexts. For example, the firm has been lead counsel in multiple antitrust matters involving allegations of unlawful settlements of Hatch-Waxman litigation, including in the first-class action antitrust trial involving claims for ‘pay-for-delay’ after the Supreme Court’s decision in FTC v Actavis. Williams & Connolly has also been retained on numerous occasions by other major law firms accused of malpractice resulting from patent litigation or prosecution.

In the past year, the firm received the award for Hatch-Waxman Impact Case of the Year from LMG Life Sciences. The 2022 edition of IAM Patent 1000 recognised Williams & Connolly’s patent litigation practice as among the leading patent practices nationally and among the top seven practices in Washington, DC.

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