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Chris A. Caseiro, Esq.


Chris A. Caseiro is a Maine patent attorney who has extensive knowledge and experience in intellectual property law. He is a registered patent attorney at the United States Patent and Trademark Office.

Chris assists and counsels individual inventors and businesses in patent prosecution and enforcement in a variety of technical fields, including but not limited to:

  • Aeronautics
  • Alternative Energy
  • Analytics
  • Cannabis Industry
  • Consumer Products
  • Electronics
  • Fluids
  • Food Science
  • Manufacturing
  • Medical Devices
  • Network Management and Security
  • Semiconductors
  • Software
  • Telecommunications
  • Textiles

In addition to his robust US practice, Chris works with agents around the world in establishing patent rights in a variety of countries for his clients.

Chris has a long career in innovation and intellectual property. He has an undergraduate degree in chemical engineering with extensive course work in electrical engineering at the University of Southern Maine. He worked as an engineer at the Electric Boat Division of General Dynamics before attending law school.  He developed and evaluated materials used to modify the sound characteristics of underwater vessels.  Upon graduation from law school, he went into private practice prosecuting patent applications.  His experience expanded to include trademark and copyright protection efforts as well as the licensing and enforcement of intellectual property rights.

Chris served as the sole intellectual property attorney for Enterasys Networks of New Hampshire and Massachusetts, where he managed a portfolio of nearly 800 US and foreign patents and patent applications. He was also responsible for software licensing, patent licensing, joint development agreements and dispute matters involving intellectual property. He continues to represent Extreme Networks, successor to Enterasys, in its patent matters.

Chris assists invention owners in licensing and enforcing their patent rights. He has successfully negotiated license agreements on behalf of individual inventors and corporate clients, in some cases helping these clients license their inventions to Fortune 500 companies. He has represented patent owners and alleged infringers in patent infringement disputes. Chris prepares opinions of patentability, patent infringement and non-infringement, and patent validity and enforceability.

Chris works with trademark and service mark owners to determine the registrability and protection of their marks in the United States and abroad.  He assists clients in protecting trademark rights and defending against assertions of trademark infringement.  He also negotiates and prepares agreements for trademark use.

Chris also assists authors register copyrights in their works and license and enforce their copyrights.  He analyzes the impact of using open source software in computer programs and provides advice about the same.

Practice Areas
IP Agreements
Trade Secrets
IP Litigation

J.D., University of New Hampshire Law School (f/k/a Franklin Pierce Law Center), 1991
B.S., Chemical Engineering, University of Connecticut, 1981

Bar Admissions
Maine, 1991
United States Patent and Trademark Office, 1990
United States District Court, District of Maine, 1991
United States Court of Appeals for the First Circuit, 1992

New England Super Lawyers in Intellectual Property
2017 Lawyer of the Year by Best Lawyers in America under Patent Law
Best Lawyers in America under Patent Law
Local Litigation Star for Patents by Benchmark Litigation
IP Star by Managing Intellectual Property
BV Distinguished Rating by Martindale-Hubbell peer review ratings

American Intellectual Property Law Association
Maine Bar Association