David Tellekson focuses his practice on litigating patent cases for clients in the areas of biotechnology, pharmaceuticals, polymer chemistry and medical devices. In addition to his trial work, he also consults on patent strategy, opinions and due diligence.
David is a frequent writer and lecturer in areas of patent law and patent litigation. He has been selected as a Washington "Super Lawyer" in the area of Intellectual Property Litigation each year since 2008. He has also been recognized as one of the top Intellectual Property Litigation lawyers in Washington by Chambers USA. From 2012-2014, Intellectual Asset Management magazine named David to the IAM Patent 1000: The World’s Leading Patent Practitioners. Prior to joining Fenwick & West, he was the managing principal at Darby & Darby P.C. in Seattle.
- Novozymes v. Danisco: Lead trial counsel representing Novozymes in a successful action against rival Danisco for infringement of Novozymes’ patent for an improved alpha-amylase useful for fuel ethanol production, among other industrial applications. A jury found that Danisco willfully infringed Novozymes’ patent and awarded over $18.2 million in damages.
- Schering v. Glenmark: Lead counsel representing defendant Glenmark, the only challenger to Schering’s ezetimibe patent covering $5 billion per year drug. Favorable settlement on the eve of trial followed a Glenmark summary judgment victory.
- Sigma-Aldrich and Oxford Biomedica (UK) Ltd. v. Open Biosystems: Represented patent owner Oxford Biomedica as lead trial counsel in patent infringement action involving HIV vectors useful for drug delivery. Markman victory led to favorable settlement.
- Novozymes v. Genencor: Represented Novozymes as lead trial counsel asserting patent on genetically modified alpha-amylases. Genencor was found to willfully infringe and ordered to pay double damages and attorneys’ fees.
- Cardiac Science v. Philips Electronics: Represented plaintiff as lead trial counsel in case involving 21 patents. Damages asserted by each side combined in excess of $200 million. Key victories by Cardiac Science at Markman and summary judgment led to favorable settlement hours before seven-week trial set to begin.
- 3M v. Seibu Polymer Chemical Co., Ltd. (ITC): Co-trial counsel at patent infringement trial protecting retroreflective sheeting market valued at more than $1 billion per year.
- David K. Tellekson and John LaBarre, The Intersection of Antitrust and Intellectual Property: A Review of Recent Case Law and Trends, BNA's Patent, Trademark & Copyright Journal, August 11, 2006.
- David K. Tellekson, Sandra S. Lee and Elizabeth A. Richardson, Strategies for Attacking and Defending Pharmaceuticals Patents; A Modern Take on 'The Art of War,' Intellectual Property & Technology Law, December 2005.
- David K. Tellekson and Elizabeth Bernard, Have Patent, Will Travel: Can One Infringe a U.S. Patent by Making, Using, and Selling a Product Solely Outside the United States?, Intellectual Property Today, July 2004.
- The Decline of Process Patents: Enforceability of process claims and the controversy around divided infringement, BIO IP Counsels Committee Conference, April 2012.