Until we engaged Don Ersler as patent counsel our experience with several other firms had been, in the main, disappointing. His expertise in the fields of mechanical and electrical engineer coupled with his quick grasp of complicated issues resulted in our obtaining three essential patents in a very short period of time at a cost that was more than reasonable. His ability to communicate with the examiners at the patent office certainly has been of a real benefit to Altapure. I would recommend Atty. Ersler without reservation.

Carl L. Ricciardi

President and General Counsel

Altapure, LLC

I have recommended you to a few of my close friends.  I like the way you work.  Honesty and trust is not easy to come by lately.

Dorge O. Huang

Firenock

I have used Don Ersler since 1998 and preferred him to the big firms without hesitation and would recommend him to anyone.  I like his engineering understanding of inventions, communication and the available he provides.

John Scott

Optima Sports, LLC
www.cambertire.com

Patent No. 5,975,176

Attorney Donald Ersler has helped me with numerous intellectual property issues over the years. I have found his advice to be sound, his patient and thorough probing to be responsible, and his prices to be very reasonable. I recommend him without reservation to anyone needing help with patents, trademarks, or copyright issues.

Dr. Joel Orr
Chairman
Orr Associates International

Attorney Ersler is by far the best patent attorney we've worked with. His expertise shines through in every thing he's done for us. Why have we placed such an enormous amount of trust in his abilities over the years? Because Attorney Ersler has handled all of our patent work with great care and extraordinary attention to detail. He is very skilled in his art and easy to work with.

Matt Collins
knowyourbiz.com

I offer this letter of recommendation on behalf of patent attorney Don Ersler. I have trusted his judgment for patent applications and patent infringement matters. Unlike other patent attorneys, Don encourages me to think of alternative embodiments for my invention when filing a patent application. When I have need of infringement analysis for an issued patent, Don provides me with a thorough analysis of the patent and also provides alternative design strategies for avoiding infringement of the issued patent. All this expertise done at a reasonable cost and within a reasonable time period.

Karl B. Schmidt
Pivot Putter, Inc.

Contact information concerning the above clients are available upon request.