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Marlee Jansen joined Hansen Reynolds LLC in 2014. Prior to joining the Firm, Ms. Jansen was an Associate at Carlson Caspers in Minneapolis from 2008 – 2013. She was an Associate at Sidley Austin’s Chicago office from 2005 – 2008. She served as a law clerk for Honorable Michael S. Kanne of the of the United States Court of Appeals for the Seventh Circuit from 2004 – 2005. Prior to starting her legal career, Ms. Jansen was a product developer for Kimberly-Clark Corporation (Neenah, WI / Barton-upon-Humber, England). Ms. Jansen focuses on intellectual property counseling and litigation.


University of Minnesota Law School (J.D., magna cum laude, 2004)
Purdue University (B.S., 1997, chemical engineering)


State of Minnesota
State of Wisconsin
U.S. Patent & Trademark Office
U.S. District Court for the District of Minnesota
U.S. District Court for the Northern District of Illinois


Recognized as a “Rising Star” in Intellectual Property Litigation by Wisconsin Super Lawyers® (2016)

Recognized as a “Rising Star” by Minnesota Super Lawyers® (2013)​


​Represented manufacturer of medical devices used to close abnormal holes in the wall of the heart in several patent litigations; argued motions, prepared expert reports, wrote summary judgment and appellate briefs, and deposed key witnesses.

Defended leading nutraceutical manufacturer in patent infringement suit leading to favorable settlement after full discovery.

Part of team representing Receiver charged with recovering assets in a $190 million Ponzi scheme; litigated clawback and other claims in multiple jurisdictions to return money to 725 victims of the fraud.

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