Dr. Marlen Yan

Dr. Marlen Yan is a German qualified attorney (Rechtsanwältin) and Counsel in Quinn Emanuel’s Mannheim office. She was admitted to practice in 2010.

Marlen focuses on IP litigation with a particular emphasis on patent litigation. Since joining the firm in 2010, Marlen has represented national and international clients in a number of cases covering a wide range of technologies, i.e. telecommunications, automotive and biotech.

Marlen graduated from Humboldt University of Berlin before starting her legal clerkship at the Kammergericht (Higher Regional Court) Berlin. She obtained a doctorate degree (Ph.D.) in law from the Technical University of Dresden and an LL.M. in Intellectual Property Law from the Technical University of Dresden and the Strasbourg University (France).

Marlen has represented clients before the major German patent infringement courts (Duesseldorf, Mannheim and Munich) at district court and appellate level and in nullity proceedings before the German Patent Court and the Federal Supreme Court.

Legal 500 has ranked Marlen in both 2023 and 2024 as a “Recommended Lawyer” for patent litigation in Germany. IAM Patent 1000 ranked her as a “Recommended Individual (Bronze)” for patent litigation (infringement) in Germany in their 2024 rankings, saying that Marlen is “a collaboratively minded lawyer and highly adept problem solver who goes above and beyond to score client-defined wins.”