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Robert S. Brennen

Robert S. Brennen

Robert S. Brennen is a trial lawyer who aggressively represents businesses, universities, and individuals in disputes involving patents, copyrights, trademarks, trade secrets and other intellectual property, control of corporations, contracts, and real estate. His clients have included manufacturers, distributors, importers, entrepreneurs, scientists, engineers, insurance underwriters, real estate developers, on-line brokerages, software designers, financial institutions, and recording companies. The one characteristic that his clients have in common is that they all want their business disputes resolved as quickly and cost-effectively as possible by an aggressive and responsive lawyer who understands their business goals.

Bob has represented clients in both arbitration and mediation. He has 100 hours of training as a mediator and has served as a Court-appointed mediator for over ten years.

Bob led the committee that drafted the Local Rules for patent litigation adopted by the United States District Court for the District of Maryland effective July 1, 2011. Bob was honored during the Court's Seventh Biennial Bench-Bar Conference on October 21, 2011 by Chief Judge Deborah K. Chasanow, who issued a resolution "that this Court hereby expresses its gratitude and appreciation to Robert S. Brennen for his special service to this Court."

Affiliations & Recognition

Community Activities

  • Aircraft Owners and Pilots Association (Instrument Rated Private Pilot)

Professional Involvement

  • American Bar Association: Litigation Section; Intellectual Property Section

  • Federal Bar Association: Alternative Dispute Resolution Committees; Business Torts; Litigation Section

  • Maryland Chapter of the Federal Bar Association: Board of Governors (2015)

  • Maryland State Bar Association: Litigation Section

  • Maryland Volunteer Lawyers Service, Inc.: Board (1995-2011); President (2002-2003)


  • Baltimore SmartCEO Magazine:  Listed as "Smart Lawyer" (2008)

  • Benchmark Litigation: The Guide to America's Leading Litigation Firms and Attorneys; Listed as a Local Litigation Star for General Commercial Litigation (2013-2014)

  • Best Lawyers in America®: "Lawyer of the Year," Litigation - Real Estate, Baltimore (2017-2018)

  • Best Lawyers in America®: Selected for inclusion in the areas of Commercial Litigation, Litigation - Intellectual Property, Litigation - Patent, and Litigation - Real Estate (2009-2019)

  • Chambers USA - America's Leading Lawyers for Business: Listed in the area of Litigation: General Commercial (2017-2018)

  • Martindale-Hubbell Peer Review Rating: AV Preeminent® Rated

  • Maryland Super Lawyers®:  Selected for inclusion in the area of Intellectual Property Litigation, Business Litigation, General Litigation (2007-2012); Intellectual Property Litigation (2013-2019)

  • Super Lawyers - Corporate Counsel Edition: Listed in the area of Business Litigation (April 2008 and March 2009)


Case Examples



Press Coverage


Speaking Engagements