Mark A. Hagedorn

Mark A. Hagedorn

Barnes & Thornburg LLP

Recognized since 2014

Chicago, Illinois

Practice Areas

Litigation - Intellectual Property

Patent Law

Spinning circle Big letter B

Mark Hagedorn advises on a wide variety of intellectual property matters, including patent, trademark and copyright solicitation and IP litigation, licensing and counseling. Appreciated for his honesty and practical legal advice, Mark consistently delivers utilitarian solutions that help his clients resolve disputes and litigation efficiently and economically.

Mark offers broad experience in virtually all phases of IP counseling and litigation. He understands and has represented clients involved in a wide range of technologies, including high barrier specialty packaging films, bulk material handling systems, cardiac marker immunoassays, high speed packaging machinery and electrochemical sensors, to name only a few.

Mark provides businesses with IP enforcement, protection and counseling on a local, regional and national scale. He has successfully litigated claims in federal courts involving patents, trademarks, trade dress and trade secret disputes. He works to aggressively advocate client positions in complex litigation to achieve client goals.

Mark is dedicated to resolving litigation at the earliest stage possible in order to conserve his client’s time and resources. He is known for consistently developing unique strategies that best fit his client’s needs, whether by settlement, design change, mediation or court battle. His advocacy is grounded in an unwavering determination to help clients get through even the most difficult conflict.

An engineer by training, Mark is at his best when challenging and defending the science and technology underlying IP. He understands the most subtle nuances of sophisticated products and ground-breaking creativity, and is able to keep pace when discussing even the most esoteric features of cutting-edge innovation. Mark’s technical insight, industry acumen and legal know-how provide his clients with a holistic approach to their challenges.

Prior to joining the firm, Mark served as associate counsel at Velsicol Chemical Corporation, handling matters related to all corporate activities. Later, he was associate counsel with Hercules Incorporated, a global manufacturer of chemical specialties used in making products for home, office and industrial markets. At Hercules, he advised on patent matters related to water treatment chemicals, hydrocarbon processing products, rheology modifiers and paper chemicals. During law school, Mark also worked with Indiana University’s trademark office.

Contact & Links
  • One North Wacker Drive, Suite 4400
    Chicago, IL 60606-2833
  • Indiana University Bloomington, J.D., graduated 1998
  • Purdue University, B.S., graduated 1994
Bar Admissions
  • Illinois, Illinois State Bar Association
  • United States, U.S. Patent and Trademark Office
Court Admissions
  • U.S. Court of Appeals for the Federal Circuit
  • U.S. Court of Appeals for the Seventh Circuit

Recognized in The Best Lawyers in America® 2024 for work in:
  • Litigation - Intellectual Property
  • Patent Law
Additional Areas of Practice:
  • Copyright Law
  • Litigation - Patent
  • Trademark Law


Your browser is not fully compatible with our automatic printer friendly formatting.

Please use the print button to print this profile page.

Spinning circle Big letter B