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 would like to pass along some sound information for anyone who is in need of a Patent Attorney. One of the most obvious reasons for a patent attorney is the filing of a patent application to prevent copying of a future product or service. It is of the utmost importance that the patent attorney communicate with those involved in a timely and efficient manner. The patent attorney must not only communicate in a timely manner, but must have a grasp of the design engineering process. Further, the attorney should be able to provide guidance in how to best exploit the patentable features of an invention.

There are many Patent Attorneys to choose from. However, after dealing with Attorney Don Ersler, I feel he deserves my enthusiastic recommendation. Mr. Ersler returns phone calls in a prompt manner and shows genuine interest in the invention. Not only does he show a genuine interest in the invention, but makes design recommendations which will broaden the protection which the patent offers. He also provides updates on the progress of the patent application while providing his services at reasonable rates.

I would like to express my outward appreciation for the work of due diligence, timely response, and advice that I have received from Mr. Ersler in the processing of my patents and trademark.

Arthur Piepenbrink
King Arthur's Industries

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.