Karin L. Williams

Tel: (908) 461-5611


Karin Williams is the Co-Founder and Managing Partner of Mayer & Williams. Karin offers clients 20 years of experience as a patent lawyer, including several years as in-house counsel for AT&T Laboratories and Sony Corporation. Her client base includes Fortune 500 companies specialized in broadband communications, consumer electronics, diagnostic systems and digital technologies.

Karin has wide-ranging experience in complex patent prosecution matters. She is particularly skilled in the management of large-scale patent prosecution projects involving the coordination between in-house counsel and outside attorneys. Karin regularly advises clients on diverse technologies that include:

  • Data Compression & Coding
  • Optical Imaging Systems
  • Discrete Semiconductor Devices
  • Telecommunications
  • Electronic Circuitry
  • Medical Devices
  • Consumer Electronics

During her years as an in-house patent lawyer at AT&T and Sony, Karin counseled the companies on patent prosecution matters in the areas of consumer electronics, Internet, electronic commerce, encryption, optical communications systems, and network architecture and performance. She also conducted infringement and validity studies, advised clients on transactional matters, and supervised and managed outside counsel.

Karin started her legal career at Fitzpatrick, Cella, Harper & Scinto, where she primarily focused on patent litigation.

Professional Highlights

  • Developed a comprehensive patent portfolio involving end-user applications and features resident on mobile communication devices.
  • Conducted due diligence and clearance studies associated with the development and commercialization of optical communication equipment for an emerging company.
  • Extensive experience representing clients in complicated procedural matters and appeals before the US Patent Trial and Appeal Board. Prepared over 100 patent appeal briefs and pre-appeal briefs with high success rate.


  • J.D., Seton Hall School of Law, 1991
  • B.S., Electrical Engineering, New Jersey Institute of Technology, 1988

Bar Admissions

  • New York
  • U.S. Patent and Trademark Office