For over 20 years, Douglas Ringel has been assisting clients in protecting and defending their product and process developments and in securing and enforcing patent rights for them. He represents clients both in major patent litigation before the federal courts and in patent procurement before the U.S. Patent and Trademark Office (USPTO).

Mr. Ringel’s patent counseling practice includes advising clients of their options and providing patent opinions. He also has extensive patent procurement experience, including preparing and prosecuting hundreds of patent applications.  Mr. Ringel’s practice also focuses on litigation, having worked on numerous patent lawsuits on behalf of clients. He has represented clients in both jury and bench proceedings.

Mr. Ringel has significant intellectual property and technical experience from his previous position as a mechanical engineer and as a patent examiner at the USPTO, where he examined patents in the area of general mechanical arts.

Specific examples of Mr. Ringel's experience include representing clients in the following industries and fields:

  • Medical devices, such as cardiovascular stents, intraocular implants, spinal implants, orthopedic measurement equipment, neurosurgery fasteners, and syringes;

  • Computer, office, and consumer products, such as computer disk drives, computer mouse designs, copy machines, coffee makers, nutritional supplements, permanent wave products, diapers, pet care products, arts and crafts supplies, and toothbrushes;

  • Automotive and aerospace equipment, such as jet engines, suspension bearings, vapor recovery systems, and noise attenuation devices; and

  • Production machinery and processes and packaging, such as stamping equipment, etching processes, packaging boxes and inserts, aerosol valves, and bottle closures.
Bar and Court Admissions
  • District of Columbia
  • Florida
  • New York
  • U.S. District Court for the Southern District of New York
  • U.S. Court of Appeals for the Federal Circuit
  • Registered Patent Attorney: U.S. Patent and Trademark Office
Professional Organizations
  • American Intellectual Property Law Association 
  • International Association for the Protection of Intellectual Property
  • Licensing Executives Society