Atty. David Connaughton

Atty. David Connaughton

David Connaughton’s practice involves all aspects of intellectual property law including patents, trademarks, and copyrights, with a focus on patent application preparation and prosecution, and litigation matters. David holds a Bachelor of Science degree in Chemical Engineering with a focus in Bioengineering, and has been with Lambert Shortell & Connaughton since 2011.

Boston Boston 16 yrs experience 16 year
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Profile Summary

About David Connaughton at a glance

David Connaughton is a Partner based in Boston, Massachusetts, practicing at Lambert Shortell & Connaughton. They have 16+ years of legal experience, licensed to practice since 2010. Their practice focuses on patent, trademark, copyright, ip, and ip licensing. Admitted to practice in Massachusetts Connecticut U.S. District Court for the District of Massachusetts registered to practi (2010). Educated at Franklin Pierce Law Center (J.D. Law, 2010) and University of New Hampshire (B.S. Chemical, 2007). Serands clients in Boston, MA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • David Connaughton’s practice involves all aspects of intellectual property law including patents, trademarks, and copyrights, with a focus on patent application preparation and prosecution, and litigation matters
  • David holds a Bachelor of Science degree in Chemical Engineering with a focus in Bioengineering, and has been with Lambert Shortell & Connaughton since 2011
  • David is an attorney registered to practice before the US Patent and Trademark Office
  • He has experience in all aspects of patent practice including patent application drafting and filing, responding to office actions, reexamination proceedings, and post-grant practice, among others
  • David has prosecuted and obtained over three hundred (300) U.S. patents for clients in a wide variety of technological fields including mechanical, electrical, software, biotechnology, energy, and environmental innovations
  • David has also obtained patent registrations in numerous countries outside of the United States, in conjunction with foreign associates
  • In addition to patent prosecution, David has been lead or assistant counsel on numerous patent litigations in the Federal Courts, particularly focusing on claim construction matters, infringement/non-infringement assertions, and validity/invalidity assertions
  • Further, David advises clients on all aspects of management, enforcement, and licensing of their patent portfolios
  • David also has substantial experience in post grant proceedings before the US Patent Office’s Patent Trial and Appeal Board (PTAB), particularly inter partes review (IPR), post grant review (PGR), and ex part reexamination to address the validity or invalidity of patents after they have issued
  • Through such proceedings, David has helped strategically and effectively invalidate and/or weaken the patent positions of opposing parties to defend the patent validity positions of our clients
  • Outside of the office, David enjoys hiking and being outdoors, as well as spending time with his wife and son
  • David is also active in leadership roles at his church and is currently chair of the membership committee at Old South Church in Boston
  • When he can, David enjoys working at craft beer festivals across the country pouring beer for a Portland, Maine brewery started by his cousin
  • Recent Representative Matters • ASM Assembly Systems Weymouth Ltd. et al v
  • Stentech, Inc. et al. (D
  • NH. 2018) representing Stentech and Blue Ring in a patent infringement lawsuit. • EMSEAL Joint Systems, Ltd v
  • MM Systems Corporation (D
  • Mass. 2014) represented MM Systems in a patent infringement lawsuit resulting in favorable claim construction and a non-infringement order. • Emseal Joint Systems, Ltd. v
  • Schul International Co., LLC, Willseal, LLC, et al. (D
  • N.H. 2014) representing Schul, Willseal, and all other listed Defendants in a patent infringement lawsuit against Emseal Joint Systems, Ltd. • Tempnology LLC v
  • Grabber, Inc. (D
  • N.H. 2013) Local counsel representing Grabber, Inc. in a patent infringement lawsuit against Tempnology, LLC. • Kar Enterprises, LLC v
  • Ford Motor Company (D
  • Mass. 2011) representing Kar Enterprises, LLC in a patent infringement lawsuit against Ford Motor Company. • Schul International Company, LLC v
  • Emseal Joint Systems Ltd., PGR 2017-00053 (Patent Trial and Appeal Board), represented Schul in a Post-Grant Review (PGR) asserting invalidity of Emseal’s patent. • Schul International Company, LLC v
  • Emseal Joint Systems Ltd., PGR 2018-00034 (Patent Trial and Appeal Board), represented Schul in a Post-Grant Review (PGR) asserting invalidity of Emseal’s patent. • Clim-A-Tech Industries, Inc. v
  • William A. Ebert, IPR2017-01863 (Patent Trial and Appeal Board), represented Mr. Ebert in an Inter Partes Review (IPR) successfully confirming the validity of Mr. Ebert’s patent. • Ex Parte Steven E. Adams et al., Appeal 2019-004301(Patent Trial and Appeal Board), represented Mr. Adams and Worthen Industries successfully overturning an examiner’s rejection of patent claims, resulting in an issued patent. • Ex Parte Jim Stearns et al., Appeal 2017-006116 (Patent Trial and Appeal Board), represented Mr. Stearns successfully overturning an examiner’s rejection of patent claims, resulting in an issued patent
  • Honors & Awards • Rising Star, Massachusetts Super Lawyers, 2018 – 2020 Publications • Remedies for Unfair Trade and Patent Circumvention Caused by Pharmaceutical Price Controls, University of New Hampshire School of Law Newsletter, Spring 2010 • www.lambertpatentlaw.com/blog

Practice Areas Explained

David Connaughton's Areas of Practice

Each practice area below reflects the types of cases David Connaughton handles, with a brief overview of what that area of law covers.

Patent Law

David Connaughton is one of 20,749 patent attorneys indexed nationally. Browse patent attorneys in Massachusetts →

Trademark Law

David Connaughton is one of 23,222 trademark attorneys indexed nationally. Browse trademark attorneys in Massachusetts →

Copyright Law

David Connaughton is one of 17,495 copyright attorneys indexed nationally. Browse copyright attorneys in Massachusetts →

Intellectual Property

IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.

David Connaughton is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in Massachusetts →

IP Licensing

David Connaughton is one of 2,744 ip licensing attorneys indexed nationally. Browse ip licensing attorneys in Massachusetts →

Jurisdictional Context

Why local counsel matters in Massachusetts

Practicing law in Massachusetts. Legal matters in Massachusetts are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Boston are typically filed in the local municipal court or the appropriate Massachusetts state district court, depending on subject matter and amount in controversy. An attorney licensed in Massachusetts brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Massachusetts courts without local counsel or pro hac vice admission.

Looking for additional Massachusetts attorneys? Browse all attorneys in Boston or all attorneys in Massachusetts.

Frequently Asked

Common questions about David Connaughton

Where is David Connaughton's law office located?
David Connaughton's law practice is located in Boston, Massachusetts. The firm is Lambert Shortell & Connaughton. You can contact the office directly through this profile page.
What practice areas does David Connaughton handle?
David Connaughton focuses on patent, trademark, copyright, ip, ip licensing. Each practice area listed reflects experience handling cases of that type in Massachusetts.
How long has David Connaughton practiced law?
David Connaughton has 16+ years of legal experience and has been licensed since 2010.
Where did David Connaughton go to law school?
David Connaughton earned their education at (J.D. Law, 2010); (B.S. Chemical, 2007).
How can I contact David Connaughton for a consultation?
You can contact David Connaughton directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Education

J.D. Law
Franklin Pierce Law Center
- 2010
B.S. Chemical
University of New Hampshire
- 2007

Bar Admissions

Massachusetts Connecticut U.S. District Court for the District of Massachusetts registered to practi
Admitted: 2010

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