John D. Tran

John D. Tran, Registered Patent AttorneyJOHN D. TRAN




Intellectual Property Litigation, Patent Prosecution, Patent Reexaminations, Trademark Prosecution, Trademark Opposition/Cancellations, Trade Dress, Copyright Prosecution, and Business litigation. 

John D. Tran is a Registered Patent Attorney and Intellectual Property litigator that  manages the firm’s intellectual property practice group.  John has counseled some of the top brands in the nation, ranging from Fortune 500 & 1000 companies to emerging start-ups and high-growth ventures. John’s specialty focuses on matters dealing with Patent Infringement, Trademark Infringement, Patent Prosecution, Copyright Registration & Infringement, Trademark Registration and TTAB Oppositions/Cancellations.  

Highly regarded by both his peers and clients, John has been recognized as a Southern California SuperLawyer,  an OC Metro Top Attorney, and is an exclusive 2018 World Trademark Reporter (WTR 1000) selection. 

A seasoned litigator, John has litigated and won jury trials in both State and Federal Courts, and obtained successful outcomes in patent reexamination and trademark opposition/cancellation proceedings before the United States Patent & Trademark Office.  He has served as trial counsel to companies such as Best Buy, Greenlight Financial, and Quoc Viet Foods.   

Since 2009, Mr. Tran has been recognized by Super Lawyers magazine, an honor reserved for the top 5% of lawyers in Southern California. 

As trusted counsel, John has guided countless companies in the development, protection and enforcement of their intellectual property for over a decade and oversees the IP portfolio of some of the top brands in the country. 

As a Registered Patent & Trademark Attorney, John has also procured numerous Patents, Trademarks and Copyright registrations covering a wide range of industries,  including software/tech, medical,  fashion/apparel, cosmetics and consumer goods.

Away from work, John is a devoted husband and father of twins, and is an active mentor to at-risk teens in the foster care system.  

“John demonstrated his wealth of experience as an IP litigator while exhibiting creativity, responsiveness and diligence.  Throughout the course of litigation, John was cognizant of the impact to our business and was integral in getting the settlement completed. “Best Buy 

“For over a decade, we’ve trusted our intellectual property needs to John D. Tran and the lawyers at Rhema Law.  We greatly respect their work ethic and genuine concerns for our legal issues.  We have worked with many attorneys and have found John to be simply the best.  We trust him with our most well-guarded secrets.” – Lee’s Sandwiches International 

“This case was extremely important to us because all of our soup base products used the word “COT” as part of the brand.  We had spent so much money to brand our trademarks so we cannot afford to lose the case.  The presentation was very organized, accurate, precise and smooth. All of our expert witnesses, interpreter and confusion witnesses were superb. What really impress me was the way John…cross-examined defendant witnesses. I know that John took our case as [his] own and treat us as a family member.  Our organization thanks John and [his] team at Rhema Law for an outstanding performance. “– Quoc Viet Foods, Inc. 

“John is an excellent attorney with a great reputation in the legal community.  He is personable and very easy to work with.  John is very knowledgeable in the area of IP Law.” – OCAABA (Orange County Asian American Bar Association)












B.S. in Nuclear Medicine Science with Minor in Biology, (Cum Laude), University of the Incarnate Word, 1996; University of Texas at Austin 1992-1994; J.D. Whittier College of Law with Certification in Intellectual Property, 2002


Supreme Court of California, Central District of California; United States Patent & Trademark Office; Court of Appeals Federal Circuit; Court of Appeals for the Ninth Circuit


Orange County Asian American Bar Association (OCAABA)
Orange County Intellectual Property Law Association (OCIPLA)
Vietnamese American Bar Association (VABA)
State Bar of California- Intellectual Property Section
International Trademark Association (INTA); National Conference of Vietnamese American Attorneys (NCVAA)

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