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Admissions

California, 1994

Admitted to practice before: 

  • U.S. Patent and Trademark Office
  • U.S. District Court, Central District of California
  • U.S. Court of Appeals, Ninth Circuit
  • U.S. Court of Appeals, Federal Circuit

Credentials

  • J.D., Loyola Law School, 1994
  • M.S., Columbia University,Engineering Mechanics,  1988
  • B.S., Embry Riddle Aeronautical University, Aeronautical Engineering, 1984
  • B.S., Embry Riddle Aeronautical University, Aircraft Engineering Technology, 1984

Constantine Marantidis is a partner and Managing Partner of Womble’s Los Angeles office. He helps clients protect, enforce and extract value from market-defining innovations through creative, litigation-ready patent portfolio strategies, PTAB and reexamination proceedings, and high-stakes patent litigation. With an advanced engineering background in aeronautical engineering and engineering mechanics, Constantine distills complex technologies into compelling, outcome-driven narratives that resonate with courts, the PTAB, and senior business leadership.

He serves as a strategic counsel for patent disputes from pre-suit investigation through trial and appeal—shaping infringement and invalidity theories, integrating technical and damages narratives. Clients rely on him not only to manage litigation, but to align prosecution, licensing, and enforcement decisions with litigation risk, settlement leverage, and long-term business objectives.  His disciplined business-first approach enables companies to use patent litigation as a deliberate strategic tool to provide commercial advantage.

Constantine’s experience spans aerospace and defense, propulsion and advanced materials, medical devices, automotive and complex mechanical systems, electro-mechanical and optics, nanotechnology, chemicals, energy, and software-enabled business methods—making him a go-to counselor when the technical record is dense and the stakes are high.

In post-grant proceedings, he crafts institution-focused strategies that complement parallel district court litigation, and uses PTAB outcomes to reshape risk profiles and settlement dynamics.  He also negotiates complex IP licenses and dispute resolution agreements that protect freedom to operate, monetize core assets, and avoid repeat disputes.

A fully rated pilot and certified airframe and power plant mechanic, Constantine brings a hands-on engineer’s perspective to fact development and strategy. Outside of practice, he enjoys sailing and competing in races in Santa Monica.
 

 

Representative Experience

Any result the lawyer or law firm may have achieved on behalf of clients in other matters does not necessarily indicate similar results can be obtained for other clients.

  • Obtained the patent for the Martin Jetpack, which Time magazine listed among the Top 50 inventions of the year in 2010. The Martin Jetpack has an engine driving twin ducted fans which produce sufficient thrust to lift the jetpack and a pilot in vertical takeoff and landing, enable sustained flight, and provide for superior control.
  • Prosecuted and oversees a worldwide patent portfolio directed to SpaceShipOne and to the hybrid rocket system used in SpaceShipOne. SpaceShipOne was then named '2004 Invention of the Year' by Time magazine as a part of its annual 'Coolest Invention' issue.'
  • Secured patent protection in the U.S. and internationally for optimum speed rotor and optimum speed tilt rotor technologies for Frontier Systems, Inc. The technology allows helicopters with fixed and tilt rotors to operate at fuel efficient power settings.
  • Obtained patent portfolios directed bits and materials used in the oil drilling industry.
  • Obtained multiple patents directed to above well drilling equipment.

U.S. District Court for the Central District of California

  • Meridian Rapid Defense Group LLC v. Delta Scientific Corporation, representing Plaintiff Delta Scientific Corporation – patent infringement case resulting in Plaintiff filing a covenant not to ever sue Delta Scientific Corporation (2023).
  • Skechers U.S.A., Inc., et al. v. New Star Shoes, Inc., et al., representing Defendants New Star Shoes, Inc., David Chiu, Peter Lin, and Luanliang – design patent infringement case with a successfully negotiated favorable settlement (2006).
  • Jobar International, Inc., et al. v. Juka Innovations Corporation, representing Plaintiffs Jobar International, Inc.; Dream Products Incorporated, Support Plus Holdings, Inc., and Penn L.L.C. - complaint for declaratory judgment for non-infringement, invalidity, and unenforceability of a design patent, copyrights, trade dress, and no unfair competition (case dismissed and continued in NY action) (2017).
  • Intellibrands, LLC, et al. v. Jobar International, Inc., representing Defendant Jobar International Inc. – (filed in U.S. District Court for the Southern District of Florida/Transferred to U.S. District Court for the Central District of California) – patent and trademark infringement case with a successfully negotiated favorable settlement (2019).
  • RSA Protective Technologies, LLC v. Delta Scientific Corporation, representing Defendant Delta Scientific Corporation - patent infringement case (2019).
  • Meissner Filtration Products, Inc. v. Nordson Medical Corporation, representing Plaintiff Meissner Filtration Products, Inc. – patent infringement case with a successfully negotiated favorable settlement (2020).

U.S. District Court for the Eastern District of New York

  • Juka Innovations Corporation v. Jobar International, Inc.; Dream Products Inc.; Support Plus Holdings, Inc.; Nextera Media LLC (aka Penn LLC); and Pulse Direct, Inc. – representing Defendants in patent, copyright, and trademark infringement, and unfair competition case with a successfully negotiated settlement resulting to payment to client Defendant (2017).

Professional & Civic Engagement

  • Los Angeles Area Chamber, Board of Governors, 2022-Present
  • Los Angeles Intellectual Property Law Association LAIPLA, Member
  • USC Gould School of Law Intellectual Property Institute, Planning Committee, 2003-2022
  • Loyola Law School Intellectual Property Focus Series, Chair, Events Advisory Committee

Honors & Awards

  • Los Angeles Business Journal, Top 200 Most Influential Leader, 2025

  • Los Angeles Business Journal, Top 100 Lawyer, 2023 

Thought Leadership

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