William Shaffer focuses his practice on patent prosecution and counseling, patent portfolio building/management, patent analysis and post-grant patent procedures, including reexamination and reissue proceedings. As part of his client counseling practice, Mr. Shaffer assists clients with formulating validity and infringement opinions, patent enforcement and licensing strategies, and patent design-around efforts.
Mr. Shaffer has assisted patent litigation efforts in jurisdictions including the Northern District of California, the Eastern District of Texas, the Eastern District of Virginia and the International Trade Commission. He has provided in depth analysis of individual patents and patent portfolios in connection with venture capital investments and corporate acquisitions and advised prominent venture capital backed start-ups. Specific technologies Mr. Shaffer has experience with include, among others, computer architecture, software- and Internet-based technologies, semiconductor processing, semiconductor manufacturing equipment, chip-level packaging and hard disk drives.
Prior to joining the legal profession, Mr. Shaffer was a software engineer for GTE Government Systems Corporation.
Mr. Shaffer is a member of the firm's Executive Committee. In 2011, 2012 and 2013, he was recognized as a Northern California "Super Lawyer" in the area of Intellectual Property by SuperLawyers magazine. Mr. Shaffer was recommended by Legal 500 US in the area of Patent Prosecution in 2012 and 2013. He was named a 2013 "IP Star" by Managing Intellectual Property magazine. Mr. Shaffer was recognized as a top patent practitioner in 2013 by IAM Patent 1000 – The World’s Leading Patent Practitioners. He was named by Legal Media Group in its 2013 Guide to the World's Leading Patent Practitioners.