Highlight Image
Kenyon Successfully Represents Toyota in Years-Long Patent Litigation

Kenyon & Kenyon LLP successfully represented Toyota Motor Corp. in a long term patent litigation against American Vehicular Sciences (AVS). Originally brought by AVS in the Eastern District of Texas, the matter asserted 24 patents across seven separate cases – accusing essentially every major Toyota vehicular safety system. In the three years since the original filing, the Kenyon team filed 12 separate petitions for inter partes review (IPR) and won a stay in the E.D. Tex. pending resolution of the IPRs. The Patent Trial and Appeal Board granted each of the IPRs, and significant claims were cancelled or dropped. Additionally, the Kenyon team successfully petitioned the Federal Circuit for a writ of mandamus and the case was transferred from the E.D. Tex. to the Eastern District of Michigan, and filed various invalidity summary judgment papers, causing the plaintiff to drop a number of other asserted patents. In May of 2015, the E.D. Mich. granted the plaintiff’s unopposed motions to dismiss with prejudice all of the remaining cases against Toyota. (2015)

Katrin Feldhaus Associate
New York, NY 1.212.558.8305


Katrin Feldhaus’ practice focuses on intellectual property disputes and transactions.

Prior to joining Kenyon, Ms. Feldhaus was a legal intern at an entertainment boutique firm where she assisted with counseling in all areas of intellectual property, new media and technology law. Prior to that, she was a research assistant at Northwestern University School of Law. Ms. Feldhaus also clerked for the Civil Court and the district attorney’s office in Germany.

Ms. Feldhaus is fluent in German, her native language.




  • Northwestern School of Law, J.D., 2011
  • University of Southern California Gould School of Law, LL.M., 2008, USC Law School Merit Scholarship
  • University of Hamburg School of Law, LL.M., 2007, specialization in Conflict of Laws, Business Law, and Comparative Law
  • University of Hamburg School of Law, LL.B., 2007

Bar and Court Admissions

  • California
  • New York

Professional Organizations

Los Angeles County Bar Association; German American Lawyers Association


  • German