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Patent Litigation Group

Delivering results through aggressive and experienced advocacy

Best Law Firms BadgeJMBM’s Patent Litigation Group is a team of experienced patent litigators. Whether pursuing patent violations or defending infringement claims, you need attorneys that provide successful results — and the patent litigators at Jeffer Mangels Butler & Mitchell LLP know how to deliver. We represent inventors and entrepreneurs, universities, family-owned businesses, middle-market companies, startups and the FORTUNE 500 in patent litigation. Our approach is aggressive and efficient, and we have an impressive record of wins. Our patent litigators have tried infringement cases in jurisdictions nationwide (see below for a representative list of venues).

In addition to representing our clients in litigation, we represent them before the United States Patent and Trademark Office (USPTO) in various proceedings including post grant review (PGR), covered business method patents (prior to its statutory expiration in September 2020), and inter partes review (IPR) as well as ex-parte re-examination and supplemental examination proceedings.

We also provide related services such as freedom-to-operate opinions, non-infringement and invalidity opinions, reexamination requests, and IP due diligence. Our intellectual property lawyers offer a full range of IP counseling and litigation including trademark, copyright, trade dress, trade secret, e-commerce and related issues. Our tax lawyers are familiar with the tax consequences triggered by patent transfers and help our clients structure patent transfers in the most tax-efficient manner possible.

Patent and Technology Cases

Selected Patent Litigation Experience

Understanding the Intersection of Law and Technology

Our patent litigators are comfortable with both complex legal issues and complex technologies. Many of us have backgrounds in engineering and the sciences, working experience in technical disciplines outside the law, and undergraduate or advanced degrees in scientific fields. This technical proficiency, combined with our litigation expertise and trial experience, helps us effectively communicate complex issues and technologies to courts and juries. It also enhances our ability to effectively protect and enforce our clients' patents.

Recognized Expertise

Our clients choose us because we win, and our peers recognize for us for our expertise. Our patent litigators have been designated as Best Lawyers in America™ and Southern California Super Lawyers™, and have been included on lists of the "30 Top Intellectual Property Attorneys in California" and "Top 75 Intellectual Property Litigators" in the Daily Journal, and the "Top 100 Attorneys in Los Angeles" and "Who's Who in LA Law: Angelenos to Know in Intellectual Property Law" by the Los Angeles Business Journal. As a resource to entrepreneurs, companies and universities that own patents, we analyze the latest developments in patent litigation on our Patent Law Blog. The media frequently calls on us to explain the significance of court decisions, and our patent litigators have been quoted by the Wall Street Journal, Financial Times, Forbes, Bloomberg BusinessWeek, New York Times, Los Angeles Times, Thompson Reuters, American Lawyer, National Law Journal, ABA Journal, Los Angeles Daily Journal and other publications.

The JMBM Difference

Most patent cases don’t require an army of lawyers. JMBM defines winning as achieving the best result for each client in the most efficient way possible. One or two partners who are experienced patent litigators run each case — with the right plan and a willingness to go to trial — and are very effective and efficient. For us, efficiency means your matter is handled directly by the experienced partners you hire, and that those lawyers are personally involved in all phases of litigation: discovery, brief writing, deposition preparation, taking and defending depositions, trial preparation and trial.

Industries and Products Represented

JMBM attorneys have experience litigating patents in a variety of industries covering a wide range of goods and services, including:

  • Aircraft avionics
  • Antibodies
  • Automotive
  • Beauty care
  • Bicycles
  • Biotechnology
  • Bluetooth devices
  • Chemical processes
  • Computer animation
  • Computer hardware
  • Computer software
  • Computer-related business methods
  • Consumer products
  • Dietary and nutritional supplements
  • E-commerce systems
  • Education analytics
  • Electroluminescent phosphors
  • Exercise machines
  • Fishing gear
  • Food products and processes
  • Golf clubs
  • Inflatables
  • Insecticides
  • Internal combustion engines
  • Internet navigation systems
  • Jewelry
  • Liquid Crystal Displays
  • Manufacturing processes
  • Medical devices
  • Networking devices
  • Office products
  • Packaging
  • Percussive massage devices
  • Pharmaceuticals
  • Polymers
  • Pressure sensors
  • Product formation
  • Screen technology for sports stadiums
  • Telescopes
  • Toys and games
Expertise in Most Popular "Patent" Courts

Our experience litigating patent claims across the country includes popular patent forums such as the Eastern District of Texas, the Western District of Texas, the Northern District of California, the Central District of California and appeals to the U.S. Court of Appeals for the Federal Circuit. We have litigated patent cases in numerous district courts throughout the U.S., including:

  • District of Arizona
  • Central District of California
  • Eastern District of California
  • Northern District of California
  • Southern District of California
  • District of South Carolina
  • Eastern District of Colorado
  • District of North Dakota
  • District of Delaware
  • Middle District of Florida
  • Northern District of Florida
  • Northern District of Illinois
  • District of Massachusetts
  • District of New Jersey
  • Southern District of New York
  • Eastern District of New York
  • Northern District of Ohio
  • Western District of Tennessee
  • Eastern District of Texas
  • Western District of Texas
  • Northern District of Texas
  • District of Utah
  • Eastern District of Virginia
  • Western District of Washington
  • Western District of Wisconsin
Our Commitment to Client Service

We care about our clients, responding to their inquiries quickly and communicating with them frequently. We work with clients to manage the litigation budget appropriately, alerting them to potential “budget breakers,” seeking authorization before undertaking costly tasks, and providing clear and timely billing. Most importantly, we respond to clients’ expectations for achieving their goals.

  • JMBM's Patent Litigation Group is a team of experienced patent litigators. Whether pursuing patent violations or defending infringement claims, you need attorneys that provide successful results — and the patent litigators at Jeffer Mangels Butler & Mitchell LLP know how to deliver. We represent inventors and entrepreneurs, family-owned businesses, middle-market companies and the FORTUNE 500 […]
  • Representative Patent and Technology Cases Stan Gibson, an experienced technology and IP trial lawyer, represents inventors, manufacturers, owners and others in litigation centering on complicated technology. A partner at Jeffer Mangels Butler & Mitchell LLP (JMBM) in Los Angeles, Stan represents both defendants and plaintiffs and has litigated dozens of cases on behalf of his […]
  • In Welcome Co. v. Harriett Carter Gifts Inc., 50 U.S.P.Q.2d 1132 (D.C. Cal. 1998), aff'd per curiam (Fed. Cir. 1999), the United States Court of Appeals for the Federal Circuit affirmed the district judge's grant of a preliminary injunction involving a consumer product and means plus function claims.
  • LOS ANGELES – Jeffer, Mangels, Butler & Marmaro LLP (JMBM), one of California's foremost full-service law firms, is pleased to announce that it obtained a summary judgment ruling from the United States District Court in Los Angeles on behalf of its client Evan Townsley, owner of International Growers, Hydroasis and Deau Passe, in connection with […]
  • Los Angeles orthopedic surgeon Dr. Gary K. Michelson, who revolutionized spinal fusion surgery with the invention of spinal fusion implant technology, and his company, obtained a jury trial verdict against Medtronic Sofamor Danek, Inc. in litigation involving contract claims and patent rights. In a three-month long jury trial, Dr. Michelson's legal team secured a total […]
  • For patent cases that require more extensive resources and a team of lawyers, JMBM provides the needed expertise. Case in point: Medtronic v. Michelson in which JMBM defended Dr. Michelson, a Los Angeles inventor, against medical giant Medtronic in a case that involved more than 100 patents. JMBM pulled a team together to prepare and […]