Daniel E. Yonan "An established Section 337 leader and multi-forum trial lawyer; he astutely harnesses the firm’s technical horsepower and has a knack for getting clients out of cases quickly and satisfactorily, saving them time, money and potential heartache.” - IAM Patent 1000


Daniel E. Yonan is a director at Sterne Kessler and heads the firm’s U.S. International Trade Commission (ITC) Practice Group, in addition to being a member of the Trial & Appellate Practice Group. He is an experienced intellectual property trial attorney focusing on complicated patent disputes before federal district courts; fast-track investigations before the U.S. International Trade Commission; and proceedings before the U.S. Patent and Trademark Office Patent Trial and Appeal Board (PTAB).

Since Daniel founded the firm’s ITC practice, it has more than quadrupled in size, and Sterne Kessler is now among the top five percent of all firms active before the Commission. Daniel was further recognized among the top 15 most active attorneys before the Commission from 2014 to 2019, and is called upon for his unique ability to resolve these highly specialized proceedings, with a particular understanding of the complexities in dealing with German entities. Additionally, he is the Vice Chair of AIPLA’s ITC Committee for the 2023-25 term.

As lead counsel, Daniel takes multiple investigations through trial each year. Daniel’s unique trial skills are informed by his knowledge of the Administrative Procedure Act and his early career training with a former Director of the Office of Unfair Import Investigations.

Daniel has also appeared as lead counsel in multiple district court patent infringement trials, and has a client base that includes some of the world’s largest automotive manufacturers. He is sought out for his creative approach to resolving disputes, which includes utilizing inter partes review proceedings before the PTAB, where Daniel was recognized as being among the top 10 attorneys representing Petitioners in 2019. Daniel has further helped to establish a brand enforcement litigation practice at Sterne Kessler where he regularly secures injunctive relief for clients faced with counterfeiting and other intellectual property misappropriation.

Before attending law school at John Marshall Law School, Daniel was a new-drug research chemist at Pfizer, Inc. (formerly G.D. Searle & Co.), where he focused on the development of novel anti-inflammatory drug candidates. Daniel received his B.S. in chemistry from the University of Illinois.

Representative Matters


  • 337-TA-1365: Photovoltaic Connectors and Components Thereof – Shoals Technologies Group, LLC* v. Hewtech Philippines Corp. et. al. 
  • 337-TA-1342: Semiconductor Devices Having Layered Dummy Fill, Electronic Devices, and Components Thereof – Bell Semiconductor v. MaxLinear, Inc.* et. al.
  • 337-TA-1265: Certain Fitness Devices, Streaming Components Thereof, and Systems Containing Same – Dish Technologies LLC v. iFIT, Inc.* et. al.
  • 337-TA-1242: Certain IP Camera Systems including Video Doorbells and Components Thereof –  Eyetalk365, LLC et al. v. Vivint Smart Home, Inc.* et. al.
  • 337-TA-1235: Certain Vehicle Control Systems, Vehicles Containing the Same, and Components Thereof – Jaguar Land Rover Limited v. Volkswagen AG* et. al.
  • 337-TA-1177: Certain Semiconductor Devices, Products Containing the Same, and Components Thereof (II) – Globalfoundries US Inc. v. TSCM Technology Inc.* et. al.
  • 337-TA-1141: Certain Cartridges for Electronic Nicotine Delivery Systems and Components Thereof – Juul Labs Inc.* v. Ziip Lab SA et. al.
  • 337-TA-1139: Certain Electronic Nicotine Delivery Systems and Components Thereof – Juul Labs Inc.* v. Eonsmoke LLC et. al.

* = represented party


  • Patexia, “The 100 Most Active Attorneys Representing Petitioners – PTAB” (2023)
  • IAM Patent 1000, “National: Recommended – International Trade Commission; Washington, D.C.: Patent Litigation (Silver Band)” (2023 – 2020)
  • Patexia, “Respondent Performance (Top 100) – 2023 ITC Intelligence Report” (2023)
  • Patexia, “100 Most Active Attorneys Representing Petitioners – Inter Partes Review” (2022)
  • Managing IP, “IP Star” (2023 – 2017)
  • Super Lawyers, “Super Lawyer – Washington D.C.” (2024 – 2020)
  • Managing IP Awards, “Nominee – Litigation Practitioner of the Year (DC Metro area)” (2021)
  • IAM Patent 1000, “National: Recommended – International Trade Commission and Litigation; Washington, D.C.: Patent Litigation (Bronze Band)” (2019 – 2016)
  • LMG Life Sciences, “Life Sciences Star” (2018 – 2012)


  • J.D., University of Illinois Chicago School of Law
  • B.S., Chemistry, University of Illinois


  • District of Columbia
  • U.S. District Court for the District of Columbia
  • Virginia
  • Illinois

Languages Spoken

  • Syriac


Webinar ITC Section 337 Year in Review February 28, 2024
Webinar Strategic Use of the ITC as a Complainant September 13, 2023
Speaking Engagement IP Challenges in the Automotive Industry Virtual, September 1, 2020
Speaking Engagement 2019 Global IP Strategy Conference Washington, DC, March 15, 2019
AIPLA 2015 Annual Meeting October 22, 2015
USPTO Design Day 2012 April 10, 2012
AIPLA 2011 Annual Meeting October 21, 2011

Related News & Insights From Daniel E. Yonan

Press Release Eighteen Sterne Kessler Attorneys Recognized as 2024 “Super Lawyers” and “Rising Stars” Sterne, Kessler, Goldstein & Fox April 25, 2024
Firm Announcements Sterne Kessler and Patterson IP Law Team Up to Secure $12.9M Wirtgen Win Over Caterpillar Sterne, Kessler, Goldstein & Fox February 27, 2024
In the News Caterpillar Owes Deere $13 Million in Road-Milling Patent Trial Bloomberg Law February 27, 2024
In the News Caterpillar to Pay Wirtgen $12.9M in Damages After Patent Battle Construction Briefing February 26, 2024
Press Release Sterne Kessler Publishes 2023 ITC Section 337 Year in Review: Analysis & Trends Report Sterne, Kessler, Goldstein & Fox February 14, 2024
In the News VW To Settle Part Of Cellular Tech Patent Fight With Neo Law360 December 18, 2023
Press Release Sterne Kessler Achieves Top Litigation Rankings in Patexia’s 2023 PTAB Intelligence Report Sterne, Kessler, Goldstein & Fox September 18, 2023
In the News EVs and NPEs: Automotive Firms Reveal Keys to Their IP Strategy Managing IP August 31, 2023
In the News Patexia Insight 158: Top IPR Firms of 2022 Patexia November 10, 2022
In the News Four Patent Trends Shaping the US Automotive Sector Managing IP July 22, 2022
Press Release Super Lawyers Recognizes 14 Attorneys as 2022 “Super Lawyers” and “Rising Stars” Sterne, Kessler, Goldstein & Fox May 1, 2022
In the News Federal Circuit Backs Caterpillar Rival's Patent Win Law360 March 15, 2021
Firm Announcements Sterne Kessler Nominated for Five 2021 Managing IP Awards Sterne, Kessler, Goldstein & Fox P.L.L.C. March 11, 2021
In the News Caterpillar Can't Knock Out Road Milling IP At Fed. Circ. Law360 February 4, 2021
In the News Volkswagen Knocks Out 2 Cellular Network Patents At PTAB Law360 November 23, 2020
Press Release Sterne, Kessler, Goldstein & Fox and 15 Directors Earn Top Rankings in IAM Patent 1000 Sterne, Kessler, Goldstein & Fox P.L.L.C. June 16, 2020
Press Release Sterne Kessler Ranked and 13 Directors Named “IP Stars” by Managing Intellectual Property Sterne, Kessler, Goldstein & Fox P.L.L.C. May 5, 2020
Press Release Sterne, Kessler, Goldstein & Fox Attorneys Named 2020 Super Lawyers and Rising Stars Sterne, Kessler, Goldstein & Fox P.L.L.C. April 30, 2020
In the News Ranking the Top ITC Firms and Attorneys IPWatchdog February 29, 2020
In the News ITC Finds NJ E-Cig Maker Infringed Juul's Patents Law360 February 20, 2020
In the News Vaping Pioneer Juul Asks Agency to Block Pod-Making Competitors Bloomberg September 24, 2019
In the News PTAB Upholds Wirtgen Patent in Loss For Caterpillar Law360 July 17, 2019
Press Release Sterne Kessler Prominent Again in Intellectual Asset Management Magazine’s "IAM Patent 1000" Sterne, Kessler, Goldstein & Fox P.L.L.C June 12, 2019
In the News Shutdown Could Disrupt A Number Of ITC Patent Cases Law360 January 24, 2019
Press Release Sterne Kessler Recognized By LMG Life Sciences Among The Top IP Firms and Attorneys Sterne, Kessler, Goldstein & Fox September 25, 2018
In the News Foreign Companies Embracing ITC As Perceptions Shift Law360 April 13, 2017
In the News ITC Patent Cases Rebound to Reach 5-Year High Law360 March 1, 2017
Press Release Sterne Kessler Named IPR Firm of the Year by LMG Life Sciences LMG Life Sciences September 14, 2016
In the News ITC Patent Cases Drop As Smartphone Battles Subside Law360 February 10, 2016
In the News Top IP Firms Hired To Fight Converse TM Blitz Law360 December 23, 2014
In the News Corporate Disputes Q&A - ITC Section 337 Patent Disputes Corporate Disputes Magazine April 11, 2014