The Maxham Firm provides legal services in all areas of intellectual property (IP); specializing primarily in patent, trademark, and copyright law, as well as licensing and other contract matters relating to IP. Its attorneys are members of the California bar and are registered to practice before the U.S. Patent and Trademark Office (USPTO).

The firm was founded in 1984 by experienced patent and trademark lawyers and is based in Escondido, San Diego County. It regularly represents a variety of local, national, and foreign companies, including a wide variety of local small and medium-sized high technology companies. The firm has special expertise in filing and prosecuting patent and trademark applications in foreign countries, as well as foreign origin applications which it files in the USPTO.

Our attorneys are active members in a number of local, state, national, and international bar associations and technical and IP specialty organizations, and was an early sponsor of the CONNECT Progrma which was associated for may years with UCSD. Our preference is to establish a personal relationship with each client and we seek to reach a positive outcome to each matter entrusted to our firm. Our attorneys are experienced in the following areas:

U.S. Patents

  • Preparation and prosecution of utility, design and plant patent applications in the USPTO in all technologies, including:
    • Level and Flow Sensiors
    • Superconducting Sensing
    • Medical Devices
    • Lasers
    • Computers (Hardware & Software)
    • Communications
    • Personal Protective Equipment (PPE)
    • Everything Else
  • Patentability Searches and Opinions
  • Validity Opinions
  • Infringement Studies
  • Post Issuance proceedings, including Re-examinations, Re-issues, and invalidity actions
  • Licensing
  • Litigation in Federal Courts
  • Appeals to the USPTO Patent Trial and Appeal Board (PTAB)
  • Appeals to the U.S. Court of Appeals for the Federal Circuit (CAFC)

U.S. Trademarks

  • Availability searches and opinions
  • Filing and prosecution
  • Licensing
  • Trademark oppositions, cancellations, and appeals in the USPTO Trademark Trial and Appeal Board (TTAB)
  • Infringement litigation in state and federal courts


  • Registrations
  • Licensing
  • Litigation

Foreign Practice

  • EPO, PCT, and national foreign patent filings
  • Trademark Registrations in Foreign Countries
  • US patent and trademark applications originating abroad
  • Trade Secret Counseling and Licensing
  • Employment Invention and Non-disclosure Agreements
  • Expert witness for patent and trademark matters

To see a list of the recent U.S. patents we have obtained for our clients click here. For a list of links to web sites containing information we have found helpful in our practice please contact us today.