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The POWER List 2022: Mark E. Stallion

Mark E. StallionGreensfelder Hemker & Gale, St. Louis

As a registered patent attorney with experience in engineering, Mark Stallion brings his intellectual property clients a strong combination of legal and technical knowledge. During more than a decade as a senior project engineer and engineering manager, he worked in several technical areas, including electronic, electro-mechanical, digital and analog signal processing, software, electro-optical, display/vision systems, IR/electronic airborne countermeasures, processor and control systems, digital map and radar image analysis for target recognition, and terrain following. As a patent attorney, he has drafted patent applications for many of these technologies.

In his current practice, Stallion handles patent and trademark prosecution and portfolio management, both domestic and foreign, and opinion work. His clients include Fortune 100 and 500 companies in the areas of automated industrial production systems; public and private universities; and research institutions and universities in the areas of electrical, electro-mechanical, software, bio-medical, and bio-electrical technologies.

Bloomberg Law and Law 360 have interviewed him for articles pertaining to his specialty areas. He is listed in The Best Lawyers in America for Intellectual Property Law (2010), Copyright Law (2014–2023) and Patent Law (2019–2023).

Stallion joined Husch Blackwell in 2000 and was named partner in 2006. In 2017, Stallion joined Greensfelder and serves as the leader of the firm’s Intellectual Property Practice Group and the group’s patent team. At Husch, he proposed and managed the firm’s office in St. Louis’ CORTEX Innovation community, an inclusive economic engine for the region; he continues that work at Greensfelder.

Serving his local community, Stallion has mentored high schoolers through Junior Achievement, and served on the boards of the Independent Youth entrepreneurship organization and the Boys & Girls Clubs of America. In 2019, he was named to the Boys & Girls Clubs of Greater St. Louis Alumni Hall of Honor. In addition, he is a board member for Arch Grants, which provides funding to innovative startup companies, and for Venture Café, which is also a part of the startup community ecosystem.

Stallion earned his law degree from Saint Louis University in 1997.

The POWER List: Intellectual Property Law 2022