Constantine "Gus" Marantidis

Constantine "Gus" Marantidis

Partner vCard
626.577.8800 fax
655 North Central Avenue
Suite 2300
Glendale, CA 91203

Constantine “Gus” Marantidis is a Partner in Lewis Roca Rothgerber Christie’s Intellectual Property practice group.  With multiple degrees in aircraft and aeronautical engineering and engineering mechanics, specializes in serving clients in the field of aerospace and in its diverse technologies. In fact, Constantine obtained the patents for SpaceShipOne and for the Martin Jetpack. Constantine is also a Commercial, Instrument, Multi-Engine rated pilot as well as an Airframe & Powerplant Certified mechanic.

Constantine manages significant patent portfolios for his clients and provides counseling on various patentability issues, including design-around issues and those stemming from the launch of new products in the marketplace. Publicly-traded corporations, start-ups and individual inventors turn to Constantine for his talent in supervising and managing intellectual property litigation, negotiating complex intellectual property licensing agreements, and securing their intellectual property rights.

He represents clients in diverse technology areas including aerospace, business methods, defense and security, materials science, propulsion, medical devices, automotive, mechanical engineering, electro-mechanical engineering, life sciences, optics, nanotechnology, chemicals, oil, gas and energy. 

Professional Experience

  • Lewis Roca Rothgerber Christie LLP (legacy firm Christie Parker & Hale LLP), Partner, 2002-present

Memberships & Affiliations

  • Loyola Law School Intellectual Property Focus Series, Chair, Events Advisory Committee
  • Los Angeles Intellectual Property Law Association LAIPLA, Member
  • USC Gould School of Law Intellectual Property Institute, Planning Committee, 2003-present

Representative Matters

  • 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 overseas a world-wide 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 abroad 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.


  • Presenter, "Intellectual Property - Protecting and Enforcing for Business Advantage," Renaissance Executive Forums, Riverside Calif., and Ontario, Calif., 2015
  • Co-Presenter, “Get Your Trademark On!”, American Marketing Association Trademark Game Show, Ontario, Calif.,  2015
  • Presenter, "Intellectual Property and International Trade," World Trade Conference, Ontario, Calif., 2014
  • Moderator, "AIA Navigation Strategies," USC Intellectual Property Institute, Beverly Hills, Calif., 2013
  • Co-Presenter, "Obtaining Patent Rights on Smart Structures and Material Related Technologies," San Diego, Calif., 1996.


  • Co-Author, "Patent Rights and the 'Clinical Trial' Exception to Patent Infringement," OE Reports, January 1997


Other Info


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

Bar Admissions

California, 1994

Court Admissions

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