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About Doug

Doug Rommelmann is a registered patent attorney and counsels companies in all aspects of patent, trademark, copyright and trade secret law. He advises on patent procurement and designing around competitor’s patents, provides opinions on patent and trademark invalidity and infringement issues, represents companies in contested U.S. Patent & Trademark Office proceedings, including inter partes review (IPR) proceedings. In addition, he leads IP due diligence teams for major mergers and acquisitions and also maintains an active IP litigation practice.

He has experience in a variety of technologies ranging from check imaging and processing, online banking and e-commerce, oil field equipment, offshore mooring systems, subsea pumps and boosting systems, hydrodynamic seals, chemical equipment and processes, and medical devices and equipment. 

He has previous experience as an offshore engineer, during which time he received a patent for a deepwater marine structure, allowing him to provide further understanding and practical application when counseling companies in the various technologies.


Publications and Speeches

“Need Patent Relief? Dial 1-800-AIA-HELP,” Association of Corporate Counsel – Houston Chapter, May 2014.

Techstars Sponsor Day Workshop, June 2014.



South Texas College of Law Houston,
University of Illinois,
B.S., Civil Engineering

Bar Admissions

U.S. Patent and Trademark Office





The Legal 500 United States
Intellectual Property: Patents: Prosecution (Including Re-Examination and Post-Grant Proceedings), 2022
Euromoney Institutional Investor PLC
Managing Intellectual Property
Notable Practitioner (United States), 2022 - 2023; Notable Practitioner (Texas), 2022 - 2023; IP Stars (Texas), 2016, 2018 - 2020
BL Rankings
Best Lawyers
Patent Law, 2022 - 2024; Trademark Law, 2023 - 2024
American City Business Journals
Houston Business Journal
Who’s Who in Law, Intellectual Property, 2015
Intellectual Property
Texas’ Top Rated Lawyers, 2012