Eugene Y. Mar

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Eugene Mar represents companies in intellectual property litigation and advises start-ups and emerging companies on strategies for building and diversifying intellectual property protection and counsels them on licensing, assignments and best practices. 


His litigation practice focuses on litigation for technology companies.  He has represented clients in all aspects of intellectual property litigation, including Markman hearings, jury trial, and on appeals.  His cases have involved a wide range of technologies including computer software, computer server and hardware, web browser architecture, topological data analysis, mobile device operating systems, microprocessor architecture, drug-eluting stents, protein synthesis, capillary electrophoresis, data encryption and decryption, payment card security technology and signal abstraction. 


Clients value Mr. Mar for his legal knowledge and strategic thinking in finding the most cost-efficient solution to an early adjudication on the merits of a case, or when necessary, shaping difficult and complex technology cases for trial.  His successes include a recent jury verdict in favor of his client in a trade secret, breach of NDA, and unfair competition case as well as strategic, early complete judgments including the entry of judgment in favor of the defendant post-Markman in a patent case in the Eastern District of Texas and in a separate, 5-patent case post Markman in Florida. He has also represented a leading provider of computer database software and storage in obtaining summary judgment of non-infringement and also represented a global payments technology company in obtaining an early summary judgment of invalidity before the close of discovery.


Mr. Mar enjoys advising emerging companies on cost-effective intellectual property protection strategies.  His approach focuses on shaping the intellectual property strategy around the client’s core technology and how that distinguishes a client in the marketplace.  Mr. Mar also emphasizes a diversified approach to building intellectual property assets so that his clients can build a strong portfolio.  He regularly teaches best practices on how to protect IP and has also assisted emerging companies with drafting and negotiating non-disclosure, assignment and license agreements.  Mr. Mar has also advised clients in the areas of cloud-based software usage agreements and licenses and conducted due diligence for companies looking to build IP portfolios by acquiring patents.


He has been named to Benchmark Litigation’s Under 40 Hotlist (2017-2018), Managing Intellectual Property’s IP Stars (2018) in the area of Patent Litigation, and The Recorder’s inaugural list of 50 "Fast Track" lawyers in California (2012). He was named by Euromoney Legal Media Group to the shortlist of the inaugural Americas Rising Stars Awards in the “Best in Patent” category (2018).



  • Chair, Intellectual Property Section, Bar Association of San Francisco
  • Co-chair, Intellectual Property Roundtable Committee, ABA Litigation Section