Photo of William R. Lambert

William R. Lambert

Silicon Valley
F: +1.650.815.4652


  • J.D., University of New Hampshire
  • Ph.D., Chemical Physics, California Institute of Technology
  • B.A., Biochemistry, University of California, Berkeley
  • California
  • U.S. Court of Appeals for Veterans Claims
  • U.S. Patent and Trademark Office
Thought Leadership


William Lambert is a partner in the Intellectual Property Practice Group in the firm's Palo Alto office.

Areas of Practice

Dr. Lambert is a Partner in the Intellectual Property Group in Sheppard Mullin’s Silicon Valley office.  He is a registered patent attorney who focuses his practice on patent prosecution and client counseling including the validity, infringement, and freedom-to-operate opinions.  He has expertise in the  chemical, pharmaceutical, biomedical, material science, polymer science, electronics, photonics, optoelectronics, semiconductor and alternative energy industries, working with clients ranging from start-ups to Fortune 100 companies

Dr. Lambert has practiced patent law for 13 years in Silicon Valley.  He has also worked as  patent counsel for a Bay Area pharmaceutical start-up company, co-founded a start-up  electronic packaging company, and was a member of the technical staff with AT&T/Lucent Technologies Bell Laboratories at Murry Hill for 17 years.

Thought Leadership


  • American Association for the Advancement of Science, Member
  • American Bar Association, Member
  • American Chemical Society, Member
  • Silicon Valley Intellectual Property law Association, Member