Teresa J. Lechner-Fish

Special Counsel


Teresa Lechner-Fish has a unique technical background that makes her the ideal choice for filing and maintaining patent and trademark applications around the world. She has prepared and prosecuted hundreds of chemical, chemical engineering, business process and other patents during her career. In addition, she is frequently a part of the patent litigation team, learning the complex technologies, establishing the strategy and arguments, and working with technical experts. Growing companies rely on Teresa more comprehensively as their intellectual property general counsel, handling licensing and due diligence, helping them determine where internationally they should file applications, and offering strategy and advice about their competitors.

Her experience is deep in chemistry and includes:

  • Polymer compositions
  • Polyethylene compositions
  • Metal-organic framework materials
  • Mesoporous silica membranes on polymeric hollow fibers
  • Photovoltaic conjugated polymers
  • Zeolite DDR nanoparticles

Her expertise also includes analytical instrumentation and digital orthophotography, as well as experience in the energy industry, such as chemicals and refining, coal gasification, coal liquefaction, natural gas pipelines and nuclear waste management.

Teresa often represents inventors and entrepreneurs, and within a single year, has gotten more than a dozen complex patents to issue. Clients are drawn to Teresa for her ability to fast track the prosecution process – she is frequently brought in to correct problems and complete previously neglected items.

Having served as a senior chemical engineer and intellectual property coordinator/chair of the IP Review Committee for a major corporation, Teresa always keeps business development considerations, such as return-on-investment for patents and trademarks, in mind. A patent holder herself, she has invented or co-invented the following:

  • Co-inventor, Stream Switching System, U.S. Patent No. 7,131,461 (issued Nov. 7, 2006).
  • Inventor, improved carrier pre-heat system for gas chromatograph, U.S. Patent No. 6,776,025 (issued Aug. 17, 2004).
  • Co-inventor, integrated valve for gas chromatograph, U.S. Patent No. 6,601,606 (issued Aug. 5, 2003).
  • Co-inventor, sample and carrier pre-heat system for gas chromatograph, U.S. Patent No. 6,575,015 (issued June 10, 2003).
  • Co-inventor, low-cost stream switching system for gas chromatograph, U.S. Patent No. 6,536,471 B2 (issued March 25, 2003).
  • Co-inventor, improved integrated valve design for gas chromatograph, U.S. Patent No. 6,374,860 (issued April 23, 2002).

Professional Affiliations

  • Member, State Bar of Texas (2006-present)
    • Intellectual Property Law Section (2008-present)
    • Member, Trade Secrets and Unfair Competition Committee (2011-present)
      • Member, Uniform Trade Secret Act Working Group (2013)
      • Member, Texas Uniform Trade Secret Act Jury Pattern Charge Committee (2014-2015)
      • Member, Texas Uniform Trade Secret Act Working Group (2016-2017)
      • Member, Federal Defend Trade Secrets Act Jury Pattern Charge Committee (2017)
    • Member, Intellectual Property Litigation Committee (2011-present)
  • Member, Houston Bar Association (2008-present)
  • Member, Katy Bar Association (2015-present)
    • Director, Board of Directors (2016-2017)
    • Member, Education Committee (2016- present)
    • Member, Katy Area Economic Development Council (2016-2017)
  • Member, American Intellectual Property Law Association (2015-2016)
  • Member, Houston Intellectual Property Law Association (2008-present)
  • Member, Association of Women Attorneys (2015-present)
  • Member, American Chemical Society (1993-2017)
    • Member, Analytical Chemistry Division (1993-2002)
    • Member, Chemistry and the Law Division (2010-2017)
    • Member, Greater Houston Local Section (2010-2017)
  • Member, American Institute of Chemical Engineers (1996-2017)
    • Member and former Vice Chairman, Chemical Engineering and the Law Forum (2010-2017)
    • Member, South Texas Local Section (2010-2017)
  • Member, Greater Houston Partnership (2010-present)
    • Member, GHP Energy Council (2014-present)
    • Member, GHP Technology & Innovation Council (2014-2015)
    • Member, GHP Economy Council (2015-present)
    • Member, GHP Economic Development Council (2015-present)
  • Member, Katy Area Economic Development Council (2018-present)
  • Member, Christian Legal Society (2014-present)
  • Member, CRU (2014-present)

Honors & Awards

  • Recipient, Albert Nelson Marquis Lifetime Achievement Award, Marquis Who’sWho (2017)
  • Recognized, Houstonia's Top Lawyers, Houstonia Magazine, A SagaCity Media Publication (2016)
  • Listee, Marquis Who’sWho in Science & Engineering (1998-2007)
  • Listee, Marquis Who’sWho in America (1999-2017)
  • Listee, Marquis Who’sWho of American Women (1999-2009)
  • Listee, Marquis Who’sWho in the World (1999-2002)
  • Listee, Marquis Who'sWho in Finance & Industry (2000-2001)


  • J.D., University of Houston Law Center, (2005)
    • Editor, Houston Business & Tax Law Journal
    • Finalist, John R. Brown Award for Excellence in Legal Writing (2005)
    • Recipient, HBTLJ Writing Award of Distinguished Paper in Intellectual Property (2004)
    • Research Assistant, Professor Jacqueline Lang Weaver
  • M.S., University of Tulsa, (1996)
    • Chemical Engineering
  • M.S., Oklahoma State University, (1992)
    • Chemistry
  • B.S., University of North Dakota, (1982)
    • Chemistry
  • B.S., University of North Dakota, (1981)
    • Mathematics


  • Texas (2006)
  • Texas State Courts (2006)
  • U.S. District Court for the Eastern and Southern Districts of Texas
  • U.S. Patent and Trademark Office (2008)

Representative Matters

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Prepared non-infringement, freedom to operate, invalidity, and patentability opinions for some of the largest software and telecommunication companies
Prosecuted a patent application for "High-Pressure Quartz Crystal Microbalance."
Prosecution of theft of trade secrets regarding the world’s leading quoting software for contract manufacturing and OEM manufacturers.