Todd E. Fitzsimmons
Patent Attorney

Accomplished legal counsel with experience in all facets of patent prosecution, including the preparation, prosecution and appeal of patent applications, and the reissue and reexamination of patents.  Experienced with all phases of patent litigation, including discovery (e.g., depositions, etc.), motion practice, pre-trial, trial and appeal.  Strong technical background used to assist clients in the acquisition, management, enforcement and protection of intellectual property rights.

Professional Experience:
Fitzsimmons IP Law, Gardena, California, from 2014 - Present
Counsel, Founder

O'Melveny & Myers LLP, Los Angeles, California, from 2000 - 2014
Counsel, Member of the Intellectual Property & Technology Group

Developed patent portfolios for technology clients, including the preparation and prosecution of patent applications on a variety of electrical, electromechanical, and computer-related technologies.  Represented clients in patent infringement and transactional matters, including licensing and due diligence analysis of intellectual property rights.

Represented various clients before the United States Patent and Trademark Office (USPTO) and the Board of Patent Appeals and Interferences (BPAI) regarding the acquisition of patent protection on technologies including, for example, vehicle navigation systems, video games, medical devices, power supplies, business methods, MP3 devices, USB devices, and electric model trains.

Represented various clients before the USPTO regarding the validity and enforceability of patent technologies during reexamination and reissue proceedings.

Represented various clients in patent infringement actions relating to a variety of technologies, including various memory devices (e.g., DRAMs, SRAMs, etc.), aircraft cargo power drive units (PDUs), medical respiratory devices, real-time network gaming, CRT/LCD computer displays, and LCD televisions.


  • Loyola Law School                  Los Angeles, California         Juris Doctor, 2000                        St. Thomas Moore Honors American Jurisprudence Bancroft-Whitney Award in Remedies                             Loyola First Honors Award in Trial Advocacy and Patent Prosecution

  • University of Washington Seattle, Washington      Bachelor of Science      Electrical Engineering, 1994

Admitted To Practice:

  • California, U.S. District Court, Central and Northern Districts of California, U.S. Court of Appeals, Federal Circuit, United States Supreme Court
  • U.S.  Patent & Trademark Office