Attorney Bio

"Patent litigation affords me the opportunity to satisfy my two strengths — understanding complex technologies and making that technology accessible to jurors. By doing so, I provide my clients compelling, winning positions."

—John Wittenzellner

John Wittenzellner is a registered patent attorney with experience litigating and prosecuting patents in a variety of fields, including electronics, computer networking and Internet technology, automotive safety devices, semiconductor manufacturing and design, optics, microelectromechanical systems (MEMS), and software.

John’s trial experience includes Markman hearings and deposing and cross-examining difficult expert witnesses. He has experience advocating for clients in the U.S. International Trade Commission (ITC), Patent Trial and Appeal Board (PTAB), and district courts across the country.

John began developing the oral advocacy skills that are critical for an effective patent litigator as a semiconductor engineer, where he interfaced with researchers to understand complex technical issues that pertained to new products and processes being implemented into production. He was then responsible for translating those requirements to manufacturing personnel, and identifying the salient points and why they were important from a manufacturing standpoint.

Today, John’s strength lies in his ability to distill complex technical concepts and facts into a compelling story for judges and juries. He also applies this ability when preparing client expert witnesses to testify, to ensure that their testimony is clear and persuasive. During depositions and cross-examination, John uses his abilities and technical know-how to cut through diversionary tactics to extract clear admissions from opposing expert witnesses.

Education & Bar Admissions

Education

• George Mason University – Antonin Scalia Law School, J.D., cum laude, 2010
• Rochester Institute of Technology, B.S. Microelectronic Engineering, 2003

Admitted to Practice

• Pennsylvania
• District of Columbia
• United States Patent and Trademark Office

Recognition

• Selected to the Rising Stars list, Super Lawyers (Thomson Reuters), 2015–2020

Activities

• Officer: Philadelphia Intellectual Property Law Association (PIPLA)