Through his twenty years practicing as a patent attorney, Mr. Weinstein has developed broad-based expertise across all aspects of patent law. Although his practice focuses on post-grant proceedings, litigation and IP counseling, he also has years of experience prosecuting patents, drafting opinions, and licensing of patents.

Mr. Weinstein has handled all aspects of post-grant proceedings at the United States Patent and Trademark Office (USPTO) including numerous inter partes reviews, ex parte reexaminations, and reissues.

In these post-grant proceedings, he has represented clients across a variety of technological areas, including:

  • GPS and navigation
  • Glass composition
  • Cellular communication
  • Imaging and displays
  • Oil and gas extraction
  • Motors
  • Computer software

Mr. Weinstein has also worked on numerous patent disputes both at the U.S. District Court and before the International Trade Commission. He has experience in every aspect of litigation including:

  • Preliminary investigations
  • Drafting complaints
  • Overseeing discovery
  • Drafting motions and briefs
  • Conducting and defending depositions
  • Preparing witnesses
  • Arguing motions

Having lived and worked in Tokyo for over 10 years, Mr. Weinstein has extensive experience working with Japanese clients. During his time in Japan, he worked closely with Japanese clients on a variety of matters including strategic prosecution, opinions, licensing, patent litigation and post-grant proceedings. His work on patent litigation included handling all aspects of discovery, preparing witnesses and defending depositions, and drafting motions and briefs.

Throughout his career, Mr. Weinstein’s practice has worked on matters involving a myriad of technologies with a particular focus on, but not limited to, the following:

  • All aspects of cellular communication technology
  • GPS and navigation
  • Imaging and display technology
  • Computer hardware and software
  • Financial products
  • Semiconductors
  • Liquid crystals

Mr. Weinstein is also a former patent examiner at the USPTO, where he examined patent applications related to I/O processing and multi-computer architectures.


  • Georgetown University Law Center (J.D.)
  • Pennsylvania State University (B.S.)
    • Electrical Engineering


  • English
  • Japanese

Bar Admissions

  • Virginia
  • District of Columbia
  • Registered to practice before the U.S. Patent and Trademark Office
  • Supreme Court of Virginia


  • Disputes Star, Benchmark Asia-Pacific (2013, 2014)

Professional Affiliations

  • Tokyo Intellectual Property Inn of Court

Prior Affiliations

  • Oblon
  • Quinn Emanuel Urquhart and Sullivan
  • Hogan Lovells (previously Hogan & Hartson)
  • Foley & Lardner