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  • Position: ATTORNEY AT LAW
  • Experience:
  • Location: Washington, DC
  • Email: [email protected]
  • Phone: 888-860-5678 x708


A former Patent Examiner, Krystyna Colantoni focuses her practice on drafting and prosecuting patent applications, providing legal opinions on patentability, validity, and infringement, and counseling clients on strategic management of patent portfolios. Ms. Colantoni has experience in a variety of electrical and mechanical technologies. Her areas of particular expertise include automotive systems and components, combustion processes and devices, torque-transfer devices, internet-of-things (IOT), internet security, optics (EUV-IR spectrum), computer hardware and software, control systems, printer technology, and GFCI devices.

Ms. Colantoni leads Mei & Mark LLP’s patent prosecution and small business practices. She understands start-up companies’ unique needs and challenges, having learned from her own experience as a co-founder of a start-up technology company.

Ms. Colantoni challenges herself and her team to develop meaningful portfolios that reflect the unique contributions of inventors. From solo to fortune 500, our team supports the development of intellectual property assets.

Specialties: Patent prosecution, reexamination practice, pre litigation counseling, litigation support, clearance searches, freedom to operate (FTO), validity, infringement, and patentability opinions. Cross-counseling on the intersection of business with Patents, Copyrights & Trademarks.


Continued youth outreach initiatives include hosting/co-hosting STEM & STEAM fairs, and judging science fairs and moot court competitions.

Prior to joining Mei & Mark LLP, Ms. Colantoni was an attorney at Finnegan, Henderson, Farabow, Garrett & Dunner, LLP and was an intern at the D.C. Superior Court for Senior Judge Leonard Braman.

Representative Cases

U.S. District Court Litigation
    • E-Z Ink Inc., et al. v. Brother Industries, Ltd., No. 2:21-cv-00564 (E.D. Va) ( Representing sellers of after-market printer cartridges in seeking declaratory judgment of patent invalidity).
    • Nader Asghari-Kamrani & Kamran Asghari-Kamrani v. United Services Automobile Association, No. 2:15-xv-00478 (E.D. Va, Norfolk Division) (Represented independent inventors in patent infringement suit).


  • J.D., Catholic University of America
  • B.S., Biophysics, University of Scranton

Bar Admissions

  • Virginia
  • District of Columbia
  • U.S. Patent and Trademark Office.

Professional Achievements

Past President (2013/2014) and Vice President (2012/2013) of George Washington American Inn of Court. Ms. Colantoni participated in and led mock advocacy sessions, arranged and conducted CLE courses, and worked with board members to arrange programming, increase web-presence, and digitize Inn functions. Inns of Court Member 2006-2016.