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John Duy Tran

Patent application Attorney at Irvine, CA

5.0   14 reviews

also known as John D. Tran

  • Licensed for 19 years
    State CA
    Acquired 2004
    Active No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About John

Learn John’s areas of practice.

Practice areas
  1. Patent application
    Drafting and obtaining patent registrations on a variety of technologies including, mechanical devices, software, GPS technology, medical devices, and business method. Also experienced in obtaining design patent registrations in the apparel, software and technology industries. For more information;

    22 years

  2. Patent infringement
    Represent both plaintiffs and defendants in patent infringement cases and lawsuits in Federal court all across the United States. For more information;

    19 years

  3. Trademark infringement
    Represent clients in trademark/trade dress infringement matters/lawsuits in both federal court and before the Trademark Trials and Appeals Board For more information;

    19 years

  4. Trademark application
    Obtaining trademark registrations on behalf of clients all across the United States. Also represent clients in Tradmeark oppositions and cancellation proceedings. For more information;

    22 years

  5. Franchising
    Assist Franchisors and Franchisees in the setup and registration of Franchises in all 50 states and ensuring proper franchise compliance

    19 years

  6. Intellectual property
    Counseling clients in all matters involving intellectual property, including patents, trademarks, copyrights, trade secret, IP litigation, licensing and infringement related matters. For more information;

    19 years


  • John D. Tran is a Registered Patent Attorney and an Intellectual Property Litigator and a Partner at the Rhema Law Group.  His practice focuses on all aspects of Intellectual Property, including litigation, prosecution/registration, franchising, licensing and counseling. With over 15yrs of experience, John counsels a wide range of clients including start-ups to Fortune 500 companies. Widely recognized and lauded by both clients and peers, John is a frequent speaker on topics involivng intellectual property and brand protection. 
  • Litigation:  As a litigator, John has served as lead and co-lead trial counsel and has litigated and won jury trials at both the state and federal courts in matters involving intellectual property, breach of contract, and business related torts. 
  • Prosecution/Registration:  As a Registered Patent Attorney. John has obtained and procured patent, trademark, and copyright registrations on a variety of technologies including software, business methods/processes, mechanical and electrical devices, apparel/fashion design, nail/skin care industry, mobile phone accessories, and shipping/transportation industry. 
  • Core specialities:  Patents, trademarks, copyrights, trade secrets, franchise, licensing, IP & business litigation. 

View John's client testimonials:   



  • SUPERLAWYERS 2013-2018
  • 2018 WTR 1000 Selection (World's Top Trademark Professionals). 
  • OC WEEKLY "Best-Idea Lawyer" Award 2011
  • Super Lawyers Rising Star 2009-2012;
  • OC METRO Top Lawyers Selection 2010-2012;
  • AVVO Superb Rating 10 out of 10 
  • One of Top Patent Firms 2014 by IP TODAY


For more information:  

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1 Park Plaza
Suite 600
Irvine, CA, 92614


5.0 / 5.0
  14 customer reviews
5 Star
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1 Star
Posted by Antonio | April 11, 2019
This review is from a potential client who consulted with this attorney.
| Consulted Attorney
Goes above and beyond to help
I reached out to John with some questions not knowing he was on vacation. John responded quickly letting me know he was on vacation AND STILL offered his assistance on a matter, who does that!?!? I couldn’t put in enough positive things to say about John, just know that with John, you’re in great hands and he is extremely knowledge and goes out of his way to help.
Read less
Response from John Tran April 12, 2019
Thanks Antonio for the kind review and I was glad to help.
Posted by John | September 5, 2018
This review is from a person who hired this attorney.
| Hired Attorney
Huge Challenge Great result
Against some tuff odds John Tran successfully won my company a patent on a gas leak detection unit. That will be used across the United States with Gas utilities and safety organizations. I would highly recommend John for your consideration to handle your patent needs.
Response from John Tran April 12, 2019
Thank you for the wonderful comments but it was my pleasure to work on this matter and happy that we were able to obtain patent protection on your great invention.
Posted by Jenn | July 16, 2018
This review is from a person who hired this attorney.
| Hired Attorney
John has completed multiple patent and trademark applications for my company, that majority was approved. We have been working with him for over 5 years now and he has protected my small company from big companies taking our ideas or using our trademarks. Best firm I've ever worked with. They truly care for their clients and you feel confident that they will get the job done no matter what it takes. Highly recommend John! Excellent service, trustworthy, attention to detail, knowledgeable, personalized approach.
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Response from John Tran April 12, 2019
Thank you so much for the kind comments!
Posted by anonymous | January 4, 2017
This review is from a person who hired this attorney.
| Hired Attorney
business litigation
I hired John for a business lawsuit. He handled the case with efficiency and professionalism. My billing statements were detailed and accurate. John especially impress me during depositions. He was attentive and used his trial experiences to extract useful information from the defendants. I think trial experiences should be one of the most important criteria in choosing a lawyer. Probably this will not go well with Avvo's review guidelines but John is a "badass" lawyer. I would definitely recommend him.
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Response from John Tran April 12, 2019
Never been called a "bad ass" lawyer but thanks so much for the review and trusting your case with us. Glad we resolved it and you're happy.
Posted by anonymous | June 27, 2011
John Tran is a true professional and a world class attorney, he is knowledgeable and is highly effective.
It is very refreshing to work with a professional like Mr. John Tran.. I am most appreciative of his straight forwardness approach to counsel. I feel and know that I can count on John to provide me with a thorough assessment inorder to help me make informed decisions. I wholeheartedly TRUST in his guidance and expertise.
Posted by Russell | June 26, 2011
John Tran Review by Dr. Darnell
I worked with John on a very complicated, international patent case. John was extremely professional throughout the case. We worked in close concert and finished with a good outcome. I would recommend John and his firm, and would personally be happy to work with him again.
Posted by anonymous | October 14, 2010
John Duy Tran
was very through & took care of our issue promptly & eficiently
Posted by Bo | October 8, 2010
Thorough and patient
Since this was my first time going through the patent prosecution process, it was important to me to find a knowledgeable attorney that would patiently walk me through the entire process. John did exactly that and not long ago we received notice from the USPTO that our patent application has been allowed for issuance. Thank you John!
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Posted by Paul | February 19, 2010
Trademark Opposition
John is very knowledgeable with the patent and trademark. I value his recommendations from day 1 of our case against a giant corporation, and it's paid off at the end.
Posted by Suren | November 19, 2009
John Tran
John Tran (and the BKKT firm for that matter) has provided nothing but the best service. We are a small company and many service related companies make you feel just that way... small. John and his team worked in the complete opposite way. We always felt like a high priority, multi million dollar company based on how he dealt with our business. John is extremely thorough and knowledgeable in his field of law. He possesses a great skill that many in specialized fields lack... the ability to explain complicated or technical matters in a layman's terms so you have a very good understanding of what's going on, what your options are and how things will move forward. I wouldn't hesitate for a second to recommend John or his firm (and have done so several times) any time their fields of law come into play.
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Posted by Grant | October 14, 2009
As with anything that affects me personally and my business, I always do my research before making a commitment. Finding and working with John Tran was no different. Important decisions were on the line, and I needed someone who wasn't going to just generically handle the situation and turn out some cookie cutter solution. With John Tran I received a more personal approach, in which he took the time to really understand my business and what I was trying to achieve. Basically he took on the task as if his welfare was dependent on the projects success, and this is what set him apart from other attorney's that I've interviewed prior to signing up with John.
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Posted by Jason Hackett | September 10, 2009
Perfect Transaction For My LLC
BKKT completed my LLC in a timely and very professional manner. All questions were answered quickly and I feel very comfortable referring them to anyone who could use their services
Posted by Vu | September 9, 2009
A Fine attorney
John has been an attorney and friend for many years. I highly recommended him for his expertise, integrity, and occasional humor.
Posted by Jordan | September 9, 2009
Exceptional Professionalism & Service
John is trustworthy, honest, ethical, and informative. He saved me thousands of dollars in resolving a small Real Estate Dispute. I highly recommend him!
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  • Free Consultation 30 minutes
Payment methods
Cash, Check, Credit Card


AVVO RATING 10.0 (Superb)

Work Experience

  • Partner
  • Rhema Law Group
  • 2011 - Present
  • Partner
  • Buus, Kim, Kuo & Tran, P.C/ Ardent Law Group
  • 2006 - 2011
  • Patent Attorney
  • Oswald & Yap, LLP
  • 2004 - 2006


  • Whittier College School of Law
  • JD with specialization in Intellectual Property Law
  • 2002
  • University of the Incarnate Word
  • BS - Bachelor of Science
  • 1996
  • University of Texas at Austin
  • N/A

Legal Cases

  • Quoc Viet Foods, Inc. vs. VV FOODS
  • Obtained 6-day trial verdict of trademark infringement on behalf of Plaintiff
  • Greenlight Financial vs. Internet Brands, Inc.
  • Won $1.13 Million Dollar Judgment Plus Attorney Fees
  • Breach of Contract
  • Jury verdict for Plaintiff for $750,000.00
View all legal cases


  • American Intellectual Property Law Association
  • Member
  • 2005 - Present
  • Vietnamese American Bar Association of Southern California
  • Member
  • 2005 - Present
  • Orange County Patent Law Association
  • Member
  • 2004 - Present
  • American Bar Association
  • Member
  • 2004 - Present
  • Orange County Bar Association
  • Member
  • 2004 - Present
  • Orange County Asian American Bar Association
  • Member
  • 2004 - Present
View all associations

Languages Spoken

  • Mandarin
  • Cantonese
  • Vietnamese

Honors and Awards

  • WTR 1000 Selection (Top Worldwide Trademark Professionals)
  • WTR (World Trademark Reporter)
  • 2018
  • Super Lawyer
  • Super Lawyers Magazine
  • 2018
  • One of Top Patent Firms in U.S.
  • IP Today Magazine
  • 2014
  • Rising Star
  • Super Lawyers Magazine
  • 2014
  • Rising Star
  • Super Lawyers Magazine
  • 2013
  • Top Attorney- Patents
  • OC Metro Magazine
  • 2012
  • Rising Star
  • Super Lawyers Magazine
  • 2012
  • "Best-Idea Lawyer"
  • 2011
  • OC Metro Top Lawyers
  • OC Metro
  • 2011
  • One of the Top Patent & Trademark Firm in U.S.
  • IP Today Magazine
  • 2010
  • Vietnamese American National Gala
  • 2009
View all awards


  • Nha Magazine
  • From Ideas to Profit
  • 2006

Speaking Engagements

  • Vietnamese American National Gala
  • Honoring Excellence & Community
  • 2009

Attorney endorsements

Received (23)
Given (15)
Endorse John
Trademark application Attorney | Dec 28
Relationship: Worked together on matter
"Mr. Tran is a stellar practitioner. I've seen him first hand handle very complicated and challenging legal issue with first-rate performance. I highly recommend anyone who needs help with trademark, IP, or copyright issues to contact him without hesitation. His results in the courtroom speak for themselves. You will not be disappointed."
Intellectual property Attorney | Apr 20
Relationship: Fellow lawyer in community
"John is a fellow patent attorney and also a great guy. I've known him back in the days when OCAABA was a small organization. Keep up the good work."
Intellectual property Attorney | Jul 13
Relationship: Worked together on matter
"John is an amazing lawyer, he combines deep knowledge in patent law with solid trial skills. He is also quick to grasp any technical details. I highly recommend him."
Intellectual property Attorney | Sep 12
Relationship: Fellow lawyer in community
"John is the attorney I recommend to handle any IP matters. He's an expert in his field, smart and dedicated to his clients. I have seen him come to work early and leave late to get the job done. He is a respected colleague and good friend."
Intellectual property Attorney | Aug 15
Relationship: Fellow lawyer in community
"Caring, smart and innovative attorney. I highly recommend John Tran and his firm."
Intellectual property Attorney | Feb 01
Relationship: Fellow lawyer in community
"John is both a good friend and a highly respected colleague. In addition to his great integrity, his knowledge and experience in the area of intellectual property litigation has made it a no-brainer to refer clients his way, as I always know they will be well taken care of. It is a pleasure working with him."
Intellectual property Attorney | Jan 26
Relationship: Fellow lawyer in community
"I endorse this lawyer."
Intellectual property Attorney | Oct 24
Relationship: Fellow lawyer in community
"John is an exceptional attorney and an even more exceptional person. His knowledge and integrity are a credit to our profession, and I cannot endorse him more highly."
Intellectual property Attorney | Feb 28
Relationship: Worked together on matter
"John is my first contact on intellectual property matters. I endorse this lawyer."
Unknown Attorney | Dec 28
Relationship: Friend
"I have known John Tran for many years and am familiar with his high work ethics, legal expertise and professionalism. I would refer him to my friends and family."
Intellectual property Attorney | Aug 04
Relationship: Fellow lawyer in community
"John and the attorneys at Ardent Law Group are very experienced and well-respected within the legal community. Clients that I have referred to John's firm have had positive experiences and were completely satisfied with the firm's work. I highly recommend him."
Intellectual property Attorney | Aug 03
Relationship: Fellow lawyer in community
"I have referred cases to Ardent Law Group and have received positive feedback. John and his firm are smart lawyers who provide exceptional service and are well-regarded in the legal community."
Trademark application Attorney | May 26
Relationship: Friend
"I have worked with John on a couple of matters regarding patent issues for my clients. He is professional, courteous, and knowledgeable. John strikes me as a solid individual as well as a lawyer. I hope that our professional relationship continues and further evolves in the future."
Intellectual property Attorney | Feb 19
Relationship: Worked together on matter
"John is very professional, knowledgeable and personable. I highly recommend him."
Intellectual property Attorney | Feb 08
Relationship: Worked for lawyer
"I worked with John on a variety of matters involving patent and trademark law. I also attended a workshop in which John spoke about the legal issues surrounding the registration of trademarks. I found John to be very knowledgeable of the law and up to date on the latest developments. He is extremely generous with his knowledge and communicates effectively with clients and colleagues alike. I endorse this lawyer's work."
Intellectual property Attorney | Feb 04
Relationship: Fellow lawyer in community
"I endorse this lawyer's work. For having an incredibly successful international IP practice, with clients all over the Pacific Rim in particular, John is extremely humble and down-to-earth, kind and easy to work with. I would entrust my own clients' international IP needs to him in a heartbeat."
Intellectual property Attorney | Feb 02
Relationship: Fellow lawyer in community
"I endorse this lawyer's work."
Intellectual property Attorney | Feb 01
Relationship: Other
"I highly endorse John's work. He is by far one of the most knowledgable and creative attorney's I know. In the field of patent and trademark law, there is none better."
Patent application Attorney | Jan 29
Relationship: Fellow lawyer in community
"I endorse this lawyer's work. John Tran is an honest and upstanding citizen in the legal community in which I trust for legal advise on not just Intangible property legal issues, but general legal issues. He is a wealth of information and an asset to the legal community."
Patent application Attorney | Oct 21
Relationship: Fellow lawyer in community
"John is a skilled patent attorney who has serviced clients not only on a national level but on a global level. His background in engineering is particularly useful in assisting clients with complicated patent applications and infringement matters. I would highly recommend John and his firm to anyone who is looking for a full service law firm."
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Patent application
Patent application
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Health care
Employment and labor
Employment and labor
Intellectual property
Estate planning
Corporate and incorporation