Arnold & Porter attorneys Louis Ederer, Dori Hanswirth, Paul Llewellyn, John Rynkiewicz, Matthew Salzmann, and Rhonda Trotter were recognized in the 2020 edition of World Trademark Review 1000. The research directory annually compiles a "go-to" resource on trademark practices and practitioners that can provide "world-class legal trademark expertise."

This year, WTR 1000 recognized Arnold & Porter's attorneys for their enforcement and litigation abilities as well as their prosecution and strategy experience. The guide also highlighted the firm for its "exemplary work for high-caliber clients."