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Shimokaji & Associates is an intellectual property law firm. The firm’s highly experienced patent attorneys, trademark attorneys and other professionals specialize in patent, trademark, copyright, trade secret, and unfair competition.  
We protect your valuable ideas using our expertise in:

  • patent infringement litigation, trademark infringement litigation, copyright infringement litigation
  • patent portfolio development, including design patent applications and utility patent applications; patent appeals
  • trademark portfolio development, including trademark applications, trademark opposition and cancellation proceedings in the US Patent & Trademark Office
  • brokerage and monetization of patents and trademarks through acquisitions, divestitures, sales, purchases, and licensing.

The clients we serve range from start-ups and emerging stage to Fortune 100 companies, and from government entities to universities. From our California office, we easily work with our clients throughout the entire United States and Asia.

Our commitment is exceptional client service, quality work product, and timeliness – from administrative staff to lawyers.