For over twenty years, Douglas E. 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 United States Patent & Trademark Office.

Mr. Ringel has unique expertise because he is a mechanical engineer and served as a Patent Examiner in the United States Patent & Trademark Office where he examined patents in the area of general mechanical arts.

Mr. Ringel's patent counseling experience 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 litigation experience includes working on numerous patent lawsuits on behalf of clients. He has represented clients in both jury and bench proceedings.

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
  • Registered Patent Attorney: U.S. Patent and Trademark Office
  • U.S. Court of Appeals for the Federal Circuit
  • U.S. District Court for the Southern District of New York
professional organizations
The International Association for the Protection of Intellectual Property; the American Intellectual Property Law Association and the Licensing Executives Society