Ralph A. Dengler

Dengler Ralph

Ralph Dengler is a U.S. Marine Corps combat veteran and first-chair trial attorney. He brings his commitment and zeal to counseling clients and litigating patent, trademark, trade secret, and copyright matters in federal courts across the United States, in the UK and Germany, and before the Unified Patent Court (UPC). Ralph handles matters across diverse technologies, including streaming and social media, railroad control systems, software and electronics, 3D printing, video surveillance and monitoring, telecommunications, shooting and outdoor sports industries, pharmaceuticals and medical devices, chemical compounds, food containers and packaging, and construction and dredging.

Ralph began his legal career as an assistant district attorney in the Bronx, and his IP law practice at Fitzpatrick Cella Harper & Scinto. He also served for 22 years as an infantry officer in the U.S. Marine Corps, retiring in 2010 as a reserve colonel.


Government Experience

  • Assistant District Attorney, Office of the Bronx District Attorney
  • Active Duty Officer, United States Marine Corps, 1988-1993
  • Reserve Officer, United States Marine Corps, 1994-2010

Representative Matters

Current Matters

  • Defending streaming media technology companies in the Eastern and Western Districts of Texas, the District of Delaware, and the Northern District of California, including parallel inter partes and ex parte review proceedings before the Patent Office
  • Defending a national railroad company in patent litigation relating to remote safety control systems
  • Providing IP counseling to a 3D printing manufacturing company
  • Serving as pro bono general counsel for a national nonprofit children’s charity

Prior Engagements

  • Represented a telecommunications provider in patent infringement litigations in the Eastern District of Texas, and the Northern and Central Districts of California, from pre-lawsuit due diligence through jury trial and Federal Circuit appeal
  • Represented an international provider of digital signal processing equipment in a non-party matter in the District of Delaware
  • Defended social networking and matchmaking companies against patent troll lawsuits in the District of Delaware, invalidating patent portfolio on §101/Alice grounds at the pleadings stage
  • Represented a communications provider in defending telephony equipment patent infringement allegations in the Southern District of New York and pre-Federal Circuit appeal
  • Defended a keyboard-video-mouse control manufacturer in defending patent litigation in the Southern District of New York through bench trial and settlement
  • Defended an iconic motorcycle franchise against a patent troll lawsuit in the Eastern District of New York, related to video surveillance and monitoring
  • Defended a maple syrup jug manufacturer in a trade dress dispute in the District of Massachusetts
  • Represented a firearms manufacturer in a due diligence and licensing agreement relating to bolt-action rifle patents
  • Defended a modular trigger manufacturer against patent infringement allegations in the District of Connecticut
  • Defended a pet products manufacturer against and resolved a patent infringement lawsuit in the Northern District of Ohio
  • Represented a food packaging company in enforcing a settlement agreement in the Northern District of Illinois against a foreign "knock-off" competitor, and initiated design patent, trade dress infringement, and breach of contract claims against it
  • Represented a marine dredging and construction company in a declaratory judgment action in the District of New Jersey against a patent holding company that threatened a multi-million-dollar port expansion project
  • Defended an electronics manufacturer, a global advertising technology and content creation company, a real estate entity, and an electronic securities broker against lawsuits brought by various patent trolls in the Eastern District of Texas and the Northern District of California
  • Defended a magazine publishing entity against trademark infringement and Lanham Act allegations in the Southern District of New York; separately counseled the client regarding TTAB opposition and a related trademark dispute
  • Represented a financial ratings company in bringing theft of trade secrets, Computer Fraud and Abuse Act, and breach of contract claims against former employees in the Southern District of New York; separately defended against copyright infringement assertions
  • Represented innovator pharmaceutical companies in patent litigations in the Districts of New Jersey and Delaware against generic drug manufacturers related to antiviral, blood clotting, bone density, macular degeneration, organ transplant, and ovarian cancer pharmaceutical compounds and ingredients
  • Defended manufacturers of baby carriers, digital compass mirrors, injectable insulin pens, pet products, razor blades, automobile rocker arms, and solar panels against claims of patent infringement in various federal courts
  • Represented clients in IP due diligence matters related to portfolios of patents involving software, murine gene testing kits, polymers, and silicon-related technologies
  • Represented a local chef and restaurateur in resolving a trademark and domain name dispute with a former business partner
  • Represented an online gaming entity in asserting various business torts in the District of Nevada




  • J.D. Fordham University School of Law 1996
    • Member, Urban Law Journal
  • M.Ed. University of Virginia 1994
  • B.S. General Engineering U.S. Naval Academy 1988

Bar Admissions

  • New York

Court Admissions

  • U.S. Supreme Court
  • U.S. Court of Appeals for the Federal Circuit
  • U.S. District Court for the Southern District of New York
  • U.S. District Court for the Eastern District of New York
  • U.S. District Court for the Eastern District of Texas

Professional Memberships and Activities

  • Member, New York Intellectual Property Law Association
  • Member, New Jersey Intellectual Property Law Association
  • Member, National Shooting Sports Foundation


  • German


Pro Bono

  • General counsel, Marine Toys for Tots Foundation
  • Provide counsel to Vetiquette, Inc., a nonprofit furnishing resources and instruction to teach elementary schools about etiquette toward military veterans


  • Member, German American Chamber of Commerce
  • Member, Iraq and Afghanistan Veterans of America