May 15, 2019 - 6:57 PM EDT
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Federal Court Dismisses Competing Claims to Patents Owned by Sigma Drilling Technologies, LLC and Justin Manley

News Provided By Macdonald Devin, P.C.

DALLAS, May 15, 2019 /PRNewswire/ -- The U.S. District Court for the Eastern District of Texas, Sherman Division, filed notice with the Director of the US Patent and Trademark Office that competing claims of ownership had been extinguished by dismissal.

This action comes following Judge Amos L. Mazzant, III's dismissal with prejudice of a federal lawsuit filed by Performance Pulsation Control, Inc. against multiple Defendants, including Sigma Drilling Technologies, LLC.

"There was never a question as to the rightful owner of these inventions. Sigma Drilling Technologies, LLC and Justin Manley are the inventors and therefore the rightful owners of the intellectual property at issue.  We're happy that Performance Pulsation Control, Inc. finally admitted to itself that their claims were baseless so we can all move on," said attorney Greg Ziegler of Dallas-based Macdonald Devin P.C.

Sigma Drilling Technologies engineers, designs, and manufactures advanced pulsation control equipment for the 21st century oil & gas exploration market. With multiple patents and trademarks filed with the USPTO, Sigma has become known for their advanced systems of pulsation dampeners and suction stabilizers, including the renowned Charge Free Conversion Kit® and the Acoustic Assassin®.

The case is Performance Pulsation Control, Inc. v Sigma Drilling Technologies, LLC, Intrepid Consulting, LLC, Justin Manley, Alison Manley, William Garfield, and Pamela Goehring-Garfield – CASE NO. 4:17cv450 – Filed in the US Eastern District of Texas, Sherman Division. For more information, visit

Contact: Razonia McClellan (432) 352-7477, [email protected]



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SOURCE Sigma Drilling Technologies, LLC

Source: PR Newswire (May 15, 2019 - 6:57 PM EDT)

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