Adduci, Mastriani & Schaumberg LLP

International Trade: Intellectual Property (Section 337)

6 ranked lawyersBand 2USA - NationwideUSA 2021 View ranking table
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What the team is known for

Outstanding ITC experts with an established reputation for handling the most important investigations, acting for both complainants and defendants. Engaged by the nation's best IP practices to act where the most valuable product lines are at stake. Superior grasp of forum proceedings extends to antidumping issues and countervailing matters. Frequently called upon by an impressive list of clients, including manufacturers in the consumer technology industry.


"It has a strong depth of experience in ITC investigations," notes one source.

Another says: "It has a very good practice and all of the attorneys are very clued up on the ITC and Section 337 matters."

Commentators note: "The firm is very well connected and we appreciate its support."

Work highlights

Represented Neodron as complainant in a patent-based Section 337 action regarding the importation of infringing touch-controlled mobile devices and computers against nine respondents.

Notable practitioners

Asha Allam counsels clients in Section 337 proceedings across a variety of technologies, including consumer electronics, household appliances and LEDs.
"Asha is a good strategic thinker and takes creative positions. She is also very effective in negotiations by putting across her position in the most coherent and logical way." "She is incredibly likable, which warms everyone to her, and she is extremely knowledgeable about the ITC, with phenomenal knowledge of specific ITC cases and what happened in each." "Asha is incredibly thoughtful and gifted in terms of her thorough analysis."

Deanna Tanner Okun draws upon her experience serving as chair of the US ITC to advise on complex Section 337 IP disputes.
"She has a sterling reputation at the ITC." "Deanna provides very good advice in a general counsel role. She also has a very good understanding of how ITC legislation is developing." "She has a very good sense of the ITC, how it works and what will work there."

Joshua Rodriguez assists clients with Section 337 investigations before the ITC. He is experienced in advising on matters relating to mobile devices, among other products.
"He is a fantastic associate."

Louis Mastriani maintains a well-regarded practice advising on patent infringement and trade secrets litigation. His varied client base includes automotive manufacturers and chemical companies.

Tom Schaumberg is esteemed for his decades of ITC expertise, and regularly acts on disputes relating to the importation and sale of patent-infringing products.
"In this market, he is unmatched." "He is a well-respected pioneer in the field of Section 337 investigations and knows everything about the legislation and the practice." "Tom is one of the lions of the ITC and he has decades of experience in the venue."

James Adduci offers extensive experience litigating cases before the ITC, and is particularly noted for his patent-based Section 337 practice.

Department Information

This content is provided by Adduci, Mastriani & Schaumberg LLP.


For 40 years, Adduci, Mastriani & Schaumberg LLP (AMS) has provided expert counsel to meet clients’ unique legal needs in the fields of international trade, customs, intellectual property, and federal court litigation and appeals.

The firm is recognized as the most active firm at the ITC, involved in nearly one-third of the 1000+ Section 337 investigations filed before the ITC. The firm’s attorneys include a former ITC Chairman and agency attorneys, and attorneys have helped revise ITC statutes, rules and procedures, adding to their familiarity with the process. The firm has represented both complainants and respondents, thus providing its clients the benefit of highly effective legal strategies and guidance regardless of their role in a particular case. The firm is also deeply involved in sharing its expertise through publications and presentations. In 2019, the American Bar Association published the fourth edition of the firm’s book entitled, ‘A Lawyer’s Guide to Section 337 Investigations Before the US International Trade Commission.’ The firm also contributed to Chambers Practice Guides Enforcements of Judgement- US Trends and Development.


The firm represents both domestic and international clients and has been involved with a wide range of products, including semiconductors, computer peripheral equipment, footwear, mobile devices, LEDs, lithium-ion batteries, industrial machinery, pharmaceutical and life science products, automotive parts, and consumer products. 

International Trade: Intellectual Property (Section 337) Department

Adduci, Mastriani & Schaumberg LLP

Department location

1133 Connecticut Avenue, NW,

Washington, DC

District of Columbia


DC 20036

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Ranked Lawyers

Chambers Research is conducted by 200 Research Analysts, across 200 jurisdictions and provides nearly 6,000 rankings tables. Annually we collect hundreds of thousands of responses from clients, the majority via in-depth interview. Learn more about our methodology.

USA - Nationwide

International Trade: Intellectual Property (Section 337)

Asha Allam
Up and Coming
Deanna Tanner Okun
Band 2
Joshua W. Rodriguez
Associates to watch
Louis S Mastriani
Senior Statespeople
Tom M Schaumberg
Band 1
V James Adduci
Senior Statespeople