Charles Calkins practices intellectual property law with a focus on patent law and intellectual property transactions. Mr. Calkins, a registered patent attorney, has more than 25 years of experience in client counseling and portfolio management in patent procurement, licensing and enforcement, primarily in the life sciences, chemical, medical and computer software arts. His current practice includes a focus on the corporate and transactional aspects of intellectual property, including licensing, research and development/joint venture agreements and merger, acquisition and/or equity investment due diligence. He has been involved in well over 100 transactions in a variety of technologies including aerospace, pharmaceuticals, commodity futures trading, medical devices, personalized genetic medicine, semiconductors and DNA sequencing technologies including NextGen sequencing.

Mr. Calkins' experiences allow him to understand the business value of intellectual property and work with clients to maximize return on their investments and/or acquisitions. Mr. Calkins has worked with companies, investment banks, private equity groups, venture capitalists and other institutional investment groups to conduct due diligence and provide counseling relating to potential investments, acquisitions and/or mergers ranging in size from several hundreds of thousands of dollars to more than one billion dollars. In addition to his legal practice, Mr. Calkins is a Chair of the Piedmont Angel Network, an investor in over forty emerging technology companies and active in the regional and national technology communities. He is also past Chair of the Scientific Advisory Board at University of North Carolina Greensboro.

Mr. Calkins is AV® rated by Martindale-Hubbell* and has been named to Business North Carolina’s "Legal Elite" list. He has been recognized as a North Carolina "Super Lawyer" in the areas of Intellectual Property and Mergers & Acquisitions by Super Lawyers magazine. He was recognized in The Best Lawyers in America® for Intellectual Property Law in 2017 and the ten years immediately preceding. He was also named a "Greensboro Lawyer of the Year" in 2013 and 2015 in the area of Patent Law and again in 2017 for Patent Litigation by The Best Lawyers in America®. Mr. Calkins was named a "Law Impact Leader" by Business Leader magazine. He was named a "Global IP Luminary" by IP World for his exemplary work in the intellectual property legal area. In 2015, Mr. Calkins was recognized among the Triad's "Most Influential" professional executives by the Triad Business Journal for the tenth consecutive year. He is listed in the 2016 and the four immediately preceding editions of Chambers USA: America’s Leading Lawyers for Business in the area of Intellectual Property and he is listed in the 2013, 2014, 2015 and 2016 editions as #1 in the area of Intellectual Property. Mr. Calkins has been recognized as a 2013, 2014, 2015 and 2016 "IP Star" by Managing Intellectual Property magazine. He was recognized as a top patent practitioner in 2015 and 2016 by IAM Patent 1000 – The World’s Leading Patent Practitioners. Mr. Calkins was recommended by Legal 500 US in 2015 and 2016 for Patent Prosecution and again in 2016 for Patent Portfolio Management and Licensing. He is a former Chair of the North Carolina Bar Association's Intellectual Property Section and remains active on the Section Council.

*CV, BV, and AV are registered certification marks of Reed Elsevier Properties Inc., used in accordance with the Martindale-Hubbell certification procedure's standards and policies.

Professional & Community Activities

North Carolina Bar Association Intellectual Property Section, Section Council Member and Past Chair

University of North Carolina Greensboro, Scientific Advisory Board


  • Boston University, J.D. (1984)
  • Massachusetts Institute of Technology, S.B., Chemical Engineering & Life Sciences

Bar Admissions

  • North Carolina (1995)
  • District of Columbia (1989)
  • Massachusetts (1985)


  • U.S. Patent and Trademark Office

Who We Are

1001 West Fourth Street
Winston-Salem, NC, 27101-2400
t +1 336.607.7315
f +1 336.734.2606

Charles W. Calkins

Experience Highlights

Patent prosecution and counseling for clinical laboratory services provider
Represent a leading clinical laboratory services provider in intellectual property related services, including freedom to operate analyses, patent more
Patent counseling services for leading pharmaceuticals manufacturer
Provided patent counseling services including patent license review, dispute resolution and pre-litigation counseling to leading pharmaceuticals more
Acquisition of semiconductor and infrared sensing technology by an aerospace manufacturer
The firm assisted an aerospace manufacturer with their acquisition of semiconductor and infrared sensing technology.  The firm's work included more
Patent litigation for manufacturing company
Provided intellectual property related services, including patent preparation and prosecution in automotive fabrics, knitwear and medical prostheses’ more