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Charles Dresser

Patent Agent

D. 857.415.2990



Worcester Polytechnic Institute

Bachelor of Science (B.S.), Mechanical Engineering

Bachelor of Science (B.S.), Manufacturing Engineering

Minor in Entrepreneurship


United States Patent and Trademark Office


Charles is a Patent Agent with a focus on helping the companies he works with grow. Charles assists with all aspects of patent prosecution:

  • Preparation and prosecution of patent applications
  • Analysis and advice regarding protection of particular inventions, including evaluation of patentability
  • Assisting with Patent Trial and Appeal Board Procedures including interferences, reexamination proceedings, inter partes reviews (IPR), post-grant reviews, ex parte appeals, and other proceedings before the PTAB
  • Patent prosecution strategies for business growth and success


Charles Dresser holds degrees from Worcester Polytechnic Institute in Manufacturing and Mechanical Engineering and has been practicing patent law at the U.S. Patent and Trademark Office since 2012. He is a named inventor on over 160 patents and published patent applications. He has worked with multiple startup companies as a leading member of engineering, research & development, and intellectual property teams.

Before coming to Caldwell IP, Charles worked in-house at a number of high-tech startups, where Charles helped build and manage their patent portfolios. These high-tech startups included a dental cavity preparation laser company, an augmented reality company with a team from NASA’s Jet Propulsion Laboratory, and a medical laser company with a team from Mass General Hospital.

June 2, 2021

Charles Dresser

December 1, 2020

Patrick A. Fitch

August 4, 2020

Tom Kiselak, PhD

May 14, 2020

Ed Mantilla, PhD

July 11, 2019

Emily Gaukstern

January 29, 2019

Robert J. L. Moore

September 6, 2018

Katherine Ann Rubino

June 15, 2017

Keegan M. Caldwell, PhD