R. Mark Halligan

USA: Illinois

FisherBroyles, LLP
203 North LaSalle Street
Suite 2100
Chicago, Illinois 60601

Tel: (312) 607-0102

Email: rmark.halligan@fisherbroyles.com
Web: www.fisherbroyles.com

R. Mark Halligan is an accomplished trial lawyer who focuses his practice on intellectual property litigation and complex commercial litigation, including antitrust and licensing issues, in federal and state courts throughout the United States. An experienced patent litigator, Mark has also developed an extensive practice focused on the protection and enforcement of trade secrets. Mark represents individuals, middle-market companies and large corporations. With over 30 years of experience, Mark has become a “go-to” litigator on some of the most complex trade secret matters in the United States and worldwide.

As a partner in the top-ranked law firm of FisherBroyles, LLP, Mr. Halligan has the support of a nationwide, integrated, full service practice as well as the extraordinary bench strength of a nationally recognized intellectual property law and litigation practice with offices in Atlanta, Austin, Boston, Charlotte, Chicago, Cincinnati, Cleveland, Columbus, Dallas, Denver, Detroit, Houston, Los Angeles, Miami, Naples, New York, Palo Alto, Philadelphia, Princeton, Seattle, Washington D.C.

Mr. Halligan has received top ratings in Chambers, Legal 500, Best Lawyers, Leading Lawyers, Super Lawyers, Martindale Hubbell (AV-Rated Judicial Edition). On March 24, 2017, Mr. Halligan was inducted into the Legal 500 Hall of Fame as one of only 455 lawyers in the entire United States recognized for this elite honor and admission.

Mr. Halligan is the General Editor of the Intellectual Property Law Handbook 2017 Edition published by the Illinois Institute for Continuing Legal Education (IICLE); a Past-President of the Intellectual Property Law Association of Chicago (IPLAC); and an Adjunct Professor (Advanced Trade Secrets Law) in the LLM Program at the John Marshall Law School in Chicago. 

FisherBroyles recognizes that the success of many companies in today’s economy depends upon their ability to create, identify and protect their intellectual property rights.  From high-tech startups to established Fortune 500 companies, FisherBroyles attorneys have assisted their clients in establishing and protecting their intellectual property rights, both in the U.S. and abroad.  Because of our experience working within companies, we can help our clients at all stages in the life cycle of intellectual property, from helping employers ensure that they own the intellectual property work product of their employees and contractors, to helping companies identify new intellectual property they have created, to obtaining formal protection for new brands, ideas and innovations, to defending those valuable property rights from third-party infringers.  Our expertise includes the following offerings:

  • Patent Prosecution and Licensing
  • Trademark Prosecution and Licensing
  • Domestic and International Trademark Portfolio Management
  • Copyright Registration and Licensing
  • Rights management
  • Domain Name Registration
  • Intellectual Property Due Diligence in Transactional Matters
  • Intellectual Property Agreements with Employees and Contractors
  • Trade Secret Agreement
  • Intellectual Property Audits
  • Patent and Trademark clearance and enforcement
  • Patent and Trademark portfolio management
  • Trade secret protection
  • Internet and Social Media advice

Disputed Matters:

  • Infringement Opinions
  • “Design-Around” Assistance
  • Cease-and-Desist Letters
  • Trademark Trial and Appeal Board (TTAB) Proceedings
  • Domain Name Disputes
  • Patent Inter partes review
  • Patent, trademark, and trade secret litigation
FisherBroyles, LLP, “The Next Generation Law Firm®”​, prioritizes the highest quality of legal services by partners who have the most relevant expertise, while our structure maximizes efficiency, responsiveness, and value. Our law firm model simply aligns the interests of clients and attorneys by identifying and eliminating the inefficiencies of the traditional law firm model.

Our focus is on long-term client satisfaction; not short term profits. We eliminated billing quotas because we believe they encourage inefficiency and conflicts between what the attorney wants and what the client needs. We do not employ inexperienced attorneys who require partner supervision and add an additional layer of fees. All FisherBroyles attorneys are full partners and veterans of some of the largest and most sophisticated law firms and corporate legal departments in the U.S.

Our Law Firm 2.0® business model simply allows FisherBroyles to produce high quality work product, deliver it faster and more efficiently, and offer rates that are logical, predictable, and flexible.


“Mark Halligan has been selected by Corporate LiveWire as the 2018 Innovator of the Year for his co-invention of the new Trade Secret Examiner© software platform for trade secret asset management.”
Recent Honors