Davidson Instruments, Inc. sues Parker-Hannifin Corporation, alleging antitrust violations, theft of trade secrets, and copyright infringement and other acts due to fraudulent patent filings based on Davidson trade secrets

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06/03/2025 - 07:00 AM

THE WOODLANDS, Texas--(BUSINESS WIRE)-- Davidson Instruments, a world leader in the development of fiber optic pressure measurement systems for use in harsh industrial applications, alleges that Parker-Hannifin Corporation (NYSE: PH) is responsible for the filing of a fraudulent patent application in 2024, other fraudulent patent filings, and other acts of theft and misappropriation of Davidson’s trade secrets. Davidson’s trade secrets can eliminate greenhouse gas emissions and also maximize fuel efficiency in jet engines and other industrial combustion turbine engines when used with advanced combustion control systems.

Davidson alleges that Parker misappropriated Davidson’s proven trade secret technology after Parker failed to develop a similar fiber optic pressure sensing system through an initiative that it began in 2013. Davidson further alleges that Parker has been attempting to use fraudulent patent filings to control the market for innovations of Davidson’s fiber optic sensing technology for use in jet engines.

Davidson believes it is entitled to damages of at least $900,000,000 and certain injunctive relief. The case is: Davidson Instruments, Inc. v. Parker-Hannifin Corporation, 2:25-cv-00520, filed on May 12, 2025, in the U.S. District Court for the Eastern District of Texas, in Marshall, Texas. A redacted public copy of the lawsuit is available on Davidson’s website: www.davidson-instruments.com