Mark D. Shelley II

Mark D. Shelley II

Senior Associate, Houston

Email mark.shelley@​

Phone +1 713 632 1471

Fax +1 713 632 1401

Practice groupIntellectual Property

Leveraging his broad technical and legal background, Dr. Mark Shelley assists clients in identifying and strategically protecting their intellectual property and technology-based assets, with particular emphasis on energy-related transactions and the prosecution and litigation of patents and trademarks.

Mark's practice also includes work in M&A transactions amongst technology-focused companies, drafting complex agreements, preparing patentability, noninfringement and freedom to operate opinions, and counseling clients with respect to a wide range of intellectual property issues, including trade secrets and copyrights.

Prior to joining Hogan Lovells, Mark served as in-house counsel to a major international oil and gas services company and managed the intellectual property assets of several of its large divisions. In that role, he also drafted all manner of agreements, conducted due diligence for the acquisition of drilling technologies, supported several litigation matters, and counseled his client regarding intellectual property issues in the oil and gas sector.

Mark also practiced at a major Texas-based law firm for several years, where he drafted and prosecuted domestic and foreign patent applications, conducted post-grant proceedings, assisted clients in enforcing patent rights and defending against claims of patent infringement through litigation, and drafted agreements, performed due diligence and advised of risks relating to asset purchases.

A chemical engineer by education, training, and professional licensure, Mark has advised clients in diverse markets, including oil and gas exploration/production, agricultural chemicals, medical devices, alternative energy processes, and consumer goods.

Education and admissions


J.D., University of Houston Law Center, magna cum laude, Order of the Coif, 2005

Ph.D., Auburn University, 2000

M.S., Texas A&M University, 1995

B.S., Auburn University, summa cum laude, 1993

Bar admissions and qualifications


U.S. Patent and Trademark Office

Professional Engineer, Texas

Court admissions

U.S. District Court, Eastern District of Texas

U.S. District Court, Southern District of Texas

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