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, and is the chair of the firm's Associates Committee. He joined the firm in 1989.


Mr. Bassett's practice concentrates on intellectual property litigation, particularly on biotechnology 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 Biogen, Dynatech, Procter & Gamble, Raytheon, Genetics Institute, Calgene, Cephalon, Kurzweil Music, RSA Security, Transkaryotic Therapies, Braintree Laboratories and many others. His practice has covered all facets of litigation, including discovery, settlement, alternative dispute resolution, trials and appeals. He has appeared before the Courts of Appeals for the First and Federal Circuits.

Honors & Awards

  • 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 2012-2015 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 2016 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 Practitioners2007
  • 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


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

March 15, 2011

Chambers USA 2011 Preliminary Results Announced

January 10, 2011

WilmerHale’s IP and Antitrust & Competition Practices Named Among Law360’s Groups of 2010

June 11, 2010

Chambers USA 2010 Reveals Final Results Ranking 101 WilmerHale Lawyers and Dozens of Practices

One-hundred and one WilmerHale lawyers are recognized in the eighth edition of the guide and the firm is listed as among the best in dozens of practice areas throughout its six US locations.

Recent Highlights

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

  • A major biotechnology company in one of the largest biotech patent litigations in the country
  • A global communications equipment company in a patent dispute involving a radar detector patent
  • A major wireless broadband Internet access provider in patent litigation involving Internet access technology
  • A well known fashion designer in a Lanham Act dispute
  • An agricultural biotechnology company in litigation involving a patent on genetic "antisense" technology
  • Various clients, in a series of highly publicized litigations, seeking, among other things, to obtain the identities of individuals who had posted confidential company information or harassing material in Internet chat rooms and through private email
  • One of the world's largest furniture companies in a trade dress dispute
  • A leading biopharmaceutical company in a series of patent and patent licensing litigations
  • 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
  • Co-chair, Intellectual Property Litigation Committee of the Boston Bar Association
  • Member, American Bar Association
  • Member, Massachusetts Bar Association

Community Involvement

  • Elected representative, Town of Boxford, Massachusetts
  • 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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