Skip to Main Content
Our Commitment to Diversity


Patrick J. McElhinny

Secured a favorable settlement for a Fortune 100 Company in multi-patent competitor case involving bar code scanning technology
Trial counsel to list compiler in numerous commercial and regulatory actions.
Trial counsel for oil and gas company and obtained preliminary injunction enforcing letter of intent for lease of property for corporate headquarters.
Represents Carnegie Mellon University in district court litigation asserting patents relating to digital signal processing for computer hard drives.
On behalf of a publicly traded specialty metals company, Mr. McElhinny prosecuted claims of patent infringement for patents covering nickel-based superalloy ingots and settled that case in the Eastern District of Pennsylvania favorably after winning summary judgment on the opposing party’s antitrust claim.
Mr. McElhinny has handled many trade secret, trademark and copyright cases, as well as cases arising out of non-competition agreements. These cases often involve claims for preliminary injunctive relief. The information at issue includes: software for optimization of purchasing decisions; steel mill equipment; business information and software for industrial coatings, transportation, medical waste disposal and list compilation businesses.
On behalf of Carnegie Mellon University, Mr. McElhinny co-led the team that won one of the largest patent judgments in history in an action against Marvell Technology Group. The technology involved was digital signal processing for computer hard drives. Also on behalf of Carnegie Mellon University, Mr. McElhinny and his team successfully defended two reexaminations in the Patent and Trademark Office that challenged the patentability of the claims asserted in the CMU v. Marvell litigation.
Represents the University of Minnesota in district court litigation and related IPR involving patented technology for computer hard drives.
Mr. McElhinny has litigated other major patent cases involving a broad array of technologies and claims for hundreds of millions of dollars in damages. For example, Mr. McElhinny has pursued patent infringement claims on behalf of a publicly traded manufacturer of semiconductor processing equipment (high energy ion implanters). He has defended a claim for $50 million on a patent for power converters and a multi-patent suit involving computer networking equipment and a damages claim for $150 million. He has defended numerous patent cases for a publicly traded entertainment company. Mr. McElhinny also has handled patent cases involving megasonic cleaning of silicon wafers, PVC pipe connections, personal watercraft docking systems, magnetic media for information storage, medical devices and methods for cleaning contaminated groundwater.
Return to top of page

Email Disclaimer

We welcome your email, but please understand that if you are not already a client of K&L Gates LLP, we cannot represent you until we confirm that doing so would not create a conflict of interest and is otherwise consistent with the policies of our firm. Accordingly, please do not include any confidential information until we verify that the firm is in a position to represent you and our engagement is confirmed in a letter. Prior to that time, there is no assurance that information you send us will be maintained as confidential. Thank you for your consideration.

Accept Cancel