David B. Bassett


Chair, Associates Committee

Bassett, David B.

David Bassett is a partner in the firm's Litigation/Controversy Department, a member of the Intellectual Property Litigation Practice Group and FinTech Group. He is the former chair of the firm's Associates Committee and of the firm's Intellectual Property Practice. He joined the firm in 1989.


Mr. Bassett's practice concentrates on intellectual property litigation, particularly on biotechnology, pharmaceutical and Hatch-Waxman patent disputes. He also represents clients in a wide variety of other business disputes, including breach of contract, Lanham Act and Internet-related claims. Mr. Bassett's intellectual property litigation clients have included Forest (Allergan), Gilead Sciences, Foundation Medicine, Precision BioSciences, Biogen, Procter & Gamble, Calgene, Cephalon, Kurzweil Music, RSA Security, Braintree Laboratories and many others. His practice has covered all facets of litigation, including discovery, settlement, alternative dispute resolution, trials and appeals. Mr. Bassett has been lead trial lawyer in more than a dozen patent trials (both bench and jury), and has appeared before the Courts of Appeals for the First and Federal Circuits.

Honors & Awards

  • Highly recommended as a leading lawyer in the IP industry in the 2017 edition of Patents Expert Guide
  • Recognized as a New York leader in the Intellectual Property: Patent field in the 2005-2008 and 2010-2013 editions of Chambers USA: America's Leading Lawyers for Business
  • Named a "Life Sciences Star" in the 2012-2017 editions of LMG Life Sciences
  • Named a 2014 and 2015 leading practitioner in patent law by IAM Patent 1000: The World's Leading Patent Practitioners
  • Selected as a "New York Super Lawyer" from 2009 through 2017 for his intellectual property litigation practice
  • Highly recommended in the PLC Cross-border IP in Business Transactions Handbook 2008/09
  • Recognized as one of the world's leading life sciences - patent litigation lawyers in the 2008, 2010, 2011 and 2016 editions of Who's Who Legal: The International Who's Who of Life Sciences Lawyers
  • Selected as a "patent law expert" in Legal Media Group's Guide to the World's Leading Patent Law Practitioners 2007
  • Recommended in the 2006-07 edition of the PLC IP & IT Cross-Border Handbook
  • Named a "New England Super Lawyer" (formerly "Massachusetts Super Lawyer") in intellectual property litigation in the 2004, 2005, 2006 and 2007 issues of Boston Magazine

Publications & News


April 18, 2018

WilmerHale Recognized for Pro Bono Work by Immigrant Defense Project

On April 10, WilmerHale was recognized by the Immigrant Defense Project (IDP) for its work in the area of immigrant rights. The firm and other honorees were recognized at the IDP's 20th Anniversary Gala in New York City.

November 7, 2017

LMG Life Sciences 2017 Honors WilmerHale With Top Rankings

LMG Life Sciences has recognized WilmerHale among the nation's leading life sciences law firms in its 2017 rankings, citing the firm's Life Sciences Practice as “renowned for its range and multidisciplinary teams that counsel clients in technology, pharmaceutical and medical device companies as well as investment banks and venture capitalists.”

November 9, 2016

LMG Life Sciences Ranks WilmerHale and Attorneys Among the Best

The 2016 guide highlights nine firm practices and 18 attorneys, recognizing work under three categories—Intellectual Property, Finance and Transactional, and Non-IP Litigation and Enforcement.

June 2, 2016

Prior Art: When On Sale Is Not 'On Sale'

An article by David Bassett and Christine Duh, published by Law360 on June 2, 2016, addresses whether the on-sale bar now requires that sales or offers to sell be "public" to qualify as invalidating, and dissects a related case currently on appeal to the Federal Circuit.

September 14, 2015

LMG Life Sciences Release 2015 Rankings, Again Names WilmerHale a "Life Cycle Firm"

In its latest edition, LMG Life Sciences recognizes eight WilmerHale practice areas and 16 attorneys, and for the fourth consecutive year names WilmerHale a "Life Cycle Firm."

June 17, 2013

WilmerHale Earns Top Rankings in LMG Life Sciences Guide

The 2013 edition of LMG Life Sciences has been released, and it includes the recognition of nine WilmerHale practice areas and 17 attorneys.

May 24, 2013

Chambers USA 2013 Final Results Announced

Chambers USA: America's Leading Lawyers for Business today announced its final rankings for the 2013 edition, in which 93 WilmerHale lawyers and 44 firm practice areas have been recognized as leading in their field.

May 6, 2013

Precision BioSciences Wins Patent Infringement Lawsuit Against Cellectis

June 7, 2012

Chambers USA 2012 Final Results Announced

March 30, 2012

Chambers USA 2012 Preliminary Results Announced

Recent Highlights

During the last several years, Mr. Bassett has handled cases for numerous clients, including:

  • A successful jury trial for a biotechnology company that developed an innovative genome editing method
  • Representing a large pharmaceutical company dealing with multiple generic challenges to its flagship HIV treatment patents
  • Counseling the leading company in comprehensive genomic profiling of cancer-related genes
  • Handling multiple inter partes reviews for one of the country's largest plastics company
  • Representing a major biotechnology company in one of the largest biotech patent litigations in the country
  • Representing a leading biopharmaceutical company in a series of patent and patent licensing litigations
  • Representing an integrated business consulting service company in litigation to enforce a noncompete agreement with a former employee

Professional Activities

  • Executive Committee of the New York State Bar Association, Intellectual Property Law Section
  • Member, American Bar Association
  • Member, Massachusetts Bar Association

Community Involvement

  • Former Chair, Masconomet Regional School Committee


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JD, cum laude, Harvard Law School, 1987, Editor, Harvard Law Review; Finalist, Ames Moot Court Competition

BA, with Honors and Distinction, Indiana University, 1984, National Merit Scholarship, Phi Beta Kappa

Bar Admissions

New York




The Hon. Sarah Evans Barker, US District Court for the Southern District of Indiana, 1987 - 1989

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