Pei-Ru   Wey


Phone: 267.338.1337
Fax: 267.338.1335
Mailing: 1801 Market Street ,
Suite 2300 , Philadelphia , PA   19103
Linkedin: Pei-Ru Wey


Pei-Ru Wey’s primary focus is on patent prosecution and intellectual property (IP) litigation.  In patent prosecution, Pei-Ru works closely with inventor-scientists to understand and realize the full potential of their inventions.  Her experience spans medical, diagnostic, pharmaceutical, nutraceutical, chemical and consumer product technologies.

Pei-Ru is also an experienced IP litigator, with a focus on Hatch-Waxman litigation.  As a pharmacist-attorney, Pei-Ru combines her scientific knowledge and patient counseling experience to break down complex technology and IP legal concepts to target audiences.

Pei-Ru’s practice further includes patentability, freedom-to-operate, invalidity and noninfringement opinions across a range of technologies.


  • Helped inventors secure biologic patent rights by overcoming 101 rejections.
  • Assisted generic drug manufacturers in trial and/or settlement prior to trial in numerous Hatch-Waxman litigations.
  • Successfully defend a generic drug manufacturer in a patent infringement suit with an award of 1.9 million in attorney fees.
  • Helped a consumer product company enforce its patent against a competitor by quickly reaching settlement on favorable terms.


Pei-Ru is conversant in Mandarin Chinese.

Practice Areas

Education & Admissions

  • J.D., Santa Clara University School of Law (2012)
  • Pharm.D., Rutgers University Earnest Mario School of Pharmacy (2005)
  • California
  • New York
  • Pennsylvania
  • Fed. Cir, N.D. Cal., E.D.N.Y., S.D.N.Y., E.D. Pa.
  • USPTO No. 63,125
  • registered NJ Pharmacist


  • Women in Bio
  • Philadelphia Bar Association
  • Philadelphia Intellectual Property Law Association
  • American Intellectual Property Law Association

How Delaware and EDTX are Adapting to § 101 Challenges

By Pei Ru Wey, Esq. | September 3, 2019

Co-Author: Touhey Myer

District Courts respond in various ways to the increase in pretrial motions based on Section 101, patent eligibility.  Here is a look at the practices of some of the districts with the most active patent dockets…