16755 Von Karman Ave, Suite 275
Irvine, CA 92606

William P. Wilbar

Practice Areas
U.S., PCT, and Foreign Patent Prosecution; Patent Portfolio Management; Freedom to Operate, Non-infringement and Invalidity Opinions; Due Diligence; and Litigation Support

Technical Areas
Computer Hardware and Software; Networking; Telecommunications; Electro-Mechanical Devices; Chip Layout and Fabrication; and Control Systems

J.D.-  University of Colorado, School of Law (1996)

B.S.-  Computer Science- Columbia University, School of Engineering and Applied Sciences (1993)

Professional Experience
Mr. Wilbar has over twenty years of experience focused on the drafting and prosecuting of patents. He has worked with companies in a wide variety of technologies and of various sizes including small startups and multi-national corporations.  He has counselled clients on patent portfolio strategy both domestically, in the U.S., and worldwide.  Mr. Wilbar has also assisted clients going through due diligence, provided licensing and litigation support, and provided legal opinions including freedom to operate, invalidity, non-infringement, and patentability opinions.

Prior to joining Klein, O’Neill, and Singh, Mr. Wilbar worked at various law firms including KPPB LLP and Allen and Gledhill of Singapore.

Bar Admissions


Admitted to practice before the USPTO


Sample Patents

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