Marcus S. Harris


Marcus S. Harris


161 North Clark
Suite 4200
Chicago, IL 60601

P: 312.876.6685

F: 312.876.6259



Marcus Harris is a partner in the Chicago Office of Arnstein & Lehr LLP and a member of the firm’s Intellectual Property Practice Group.

Mr. Harris concentrates his practice on all aspects of technology law and intellectual property law, including domestic and international trademark prosecution, trademark opinions and counseling, due diligence, copyright and trade secret law. Mr. Harris has extensive experience in conducting transactions involving technology licensing, including software licensing, ERP, SCM and CRM implementations, software development agreements and confidentiality matters. He represents clients in lawsuits and threats of lawsuits involving failed ERP software implementations and is a frequent speaker on and has taught continuing legal education courses on enterprise software and technology related issues.

Mr. Harris has extensive legal and related business experience in the technology industry. Prior to entering private practice, he worked in the Legal/Contracts Department of SAP America and was Senior Corporate Counsel in charge of intellectual property at SSA Global Technologies (now Infor) where he developed and managed an extensive international trademark and patent portfolio, managed intellectual property litigation, conducted intellectual property due diligence and reviewed advertising material to verify compliance with legal requirements. During law school, Mr. Harris completed an advanced externship at the United States Copyright Office in Washington D.C.

Articles and Presentations

Mr. Harris is the author of several articles and has given multiple presentations. His most recent article is the interactive “Software License Negotiation Checklist” that can be downloaded here. Mr. Harris also has created several intellectual property informational videos, which are presented on his YouTube Channel. His videos include the following:

Professional Activities and Achievements

  • Illinois State Bar Association
  • Chicago Bar Association
  • Technology Executives Club

Bar Admissions

State of Illinois
Northern District of Illinois
District of Colorado