Mark R Bagley2019-03-25T17:30:28+00:00

Mark R. Bagley

Mr. Bagley has successfully litigated federal lawsuites through the trial phase. He has experienced all phases of the litigation process, including discovery, motion practice, depositions, preparation of experts, trial preparation, trial and appeal.

Mr. Bagley’s litigation experience includes cases involving trademark infringement, copyright infringement, unfair trade practices, and patent infringement. Mr. Bagley has also litigated numerous commercial disputes, involving topics such as breach of contract, defamation, and cybersquatting. He has represented clients in internet domain name dispute proceedings under the ICANN dispute resolution policy.

Mr. Bagley has prosecuted trademark applications and conducted opposition and cancellation proceedings before the U.S. Patent and Trademark Office (USPTO). He has also counseled clients on trademark availability and the registration and protection of copyright portfolios. He has conducted IP due diligence investigations for business acquisition transactions.


Illinois State Bar
Missouri State Bar
U.S. District Court for the Northern District of Illinois
U.S. District Court for the Eastern District of Missouri
U.S. Court of Appeals for the Federal Circuit


Mark obtained his law degree from the University of Chicago Law School, where he was a member of the Law Review. He graduated cum laude from Harvard University with an A.B. degree in English and American Literature and Language.


International Trademark Association – Internet Committee (2010-2013); Enforcement Committee (2014-2017); Internet Committee (2018-present)


Chicago Bar Association Intellectual Property Law Committee (January, 2011) – Topic: New Internet Top-Level Domain Names: Strategies for Trademark Protection
Chicago Bar Association Intellectual Property Law Committee Spring Seminar (April, 2011) – Topic: Internet Legal Issues