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Stephenie Wingyuen Yeung 楊穎苑

T 215-751-2277

    Ms. Yeung is the co-chair of the Privacy and Data Security Practice Group, leading the Firm’s work in counseling clients on issues of data privacy, including preparing privacy policies and procedures, and cross-border data transfers. She also is a member of the Litigation Services Department and the Intellectual Property Practice Group.

    Her practice ranges from protecting clients' intellectual property through securing patent and trademark rights from the United States Patent and Trademark Office and technology transfer to protecting those rights through administrative proceedings, arbitration, and litigation in federal courts. Ms. Yeung is also a member of the e-Discovery Practice Group. In that role, she regularly counsels clients on e-discovery issues and manages e-discovery projects to ensure their efficiency and cost-effectiveness.


    Representative Litigation Matters

    • Defended manufacturers and retailers of sunglasses, sporting goods, and gourmet food products against claims for patent infringement, trademark infringement, copyright infringement, and misappropriation of trade secrets;
    • Represented a manufacturer and distributor of cosmetic goods against counterfeiters in a trademark infringement action;
    • Represented trademark owners in disputes over others' use or attempted registration of similar trademarks; and
    • Counseled clients on electronic discovery issues.

    Representative Intellectual Property Transaction Matters

    • Secured trademark rights for clients in a variety of industries and protected these rights in administrative opposition proceedings before the Trademark Trial and Appeal Board;
    • Registered copyrights and counseled clients on copyright protection and fair use issues;
    • Secured patents in different technologies, including computer software, medical devices, genetic engineering methods, sporting goods, and mechanical devices;
    • Conducted intellectual property due diligence assessments in connection with the clients' technology transfer or licensing of mergers and acquisitions; and
    • Handled assignments of intellectual property rights.

    Representative Pro Bono Matters

    • Counseled nonprofit civic organizations about use and protection of their service marks.

    Additional Background

    • Ms. Yeung has a background in biology. Before law school, Ms. Yeung was a member of a medical research team in New York City's Mount Sinai Hospital's Department of Endocrinology.
    • During law school, she worked with the Boston-based AIDS Law Project in cases involving discrimination against persons with AIDS.


    • Boston University School of Law, J.D., 1999
    • Barnard College, Columbia University, B.A., 1998
    • Boston University School of Public Health, M.P.H, 1996

    Court Admissions

    • U.S. Patent and Trademark Office
    • Eastern District of Pennsylvania
    • District of New Jersey

    Bar Admissions

    • Pennsylvania, 1999
    • U.S. Patent and Trademark Office
    • New Jersey, 2000


    • Cantonese Chinese
    • Mandarin Chinese

    Professional Affiliations

    • Asian American Women's Coalition (AAWC), Advisory Board Member
    • American Bar Association, member
    • Pennsylvania Bar Association, member
    • Certified Information Privacy Professional/US (CIPP/US)
    • International Association of Privacy Professionals, member
    • Women in EDiscovery, Philadelphia Chapter, member