Trenner Law Firm, LLC


Trenner Law Firm views the relationship between a patent attorney and client as more than just a business transaction. We understand the value behind intellectual property and we want to help you protect it.

Our patent attorney works with individuals, start-ups, small businesses, law firms, large businesses, multi-national corporations, and universities. Trenner Law Firm advises clients on both business law and intellectual property law.


1624 Market Street
Suite 202
Denver, Colorado 80202
United States

In Larimer Square near the 16th Street Mall!

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Additional Locations


  • Patents
  • Trademarks
  • Copyrights
  • Intellectual Property
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  • 5-Year Badge


Available by phone during regular business hours. All phone calls returned within 1 business day.


4 Reviews
Teri Ulrich
Colorado Springs
A wealth of experience

Although my team has done several design patent applications, I had several questions about how to handle a new use invention application. I asked Mark if I could schedule an hour to consult with him. Instead of that he called and answered all of the questions I had at no charge! He was really insightful about the process and knew so many important nuances we will definitely work with him on the full patent application.

July 2020

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Deb O
1st timer

I am a 1st time user of the Tom Martino referral list - VERY SATISFIED! Mark Trenner was very helpful, HONEST, knowledgeable. I did not know where to turn in regards to patents/trademarks, so I asked Tom Martino's crew. I would definitely recommend the Trenner Law Firm - Mark was extremely helpful, honest and ready to answer any and all of my questions. Thank you Mark! I appreciate all of your help! 7/19/12

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Patent Attorney, Mark Trenner, has provided me with the VERY BEST service right from my initial phone inquiry, to meeting with me at a location convenient for me, to providing on going information/teaching regarding the patent and trademark laws, to supporting my passion for my invention, to filling the provisional patent application and trademark applications and all within my start up budget! I was a total novice entrepreneur, and Mark patiently took the time to guide me through the processes for owning my intellectual property rights. Mark has integrity and is a man of his word. I trust him completely. I'm thankful I hired Attorney Mark Trenner.

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4 Reviews



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