Patent Attorney Keith J Barkaus

USPTO Data

USPTO data is frequently out of date. You can update your information at the USPTO OED website.

Reg. No.:51431
Firm/Company:Ostrolenk Faber, LLP
Address:New York, NY 10036
Last Updated:2026-07-13

Public Data

This information is obtained from searching the Internet and may be out of date or incorrect.

Firm/Company: Home -
Other info: LinkedIn Profile Not Found
Firm Profile
Last Updated:2026-05-17

Top Applicants

This practitioner has been affiliated with the following applicants over the past 10 years.

Applicant Count
The Trustees of Columbia University in the City of New York 128
IHI Corporation 127
BEIJING XIAOMI MOBILE SOFTWARE CO., LTD. 108
Azbil Corporation 101
First Quality Tissue, LLC 77
Broadband iTV, Inc. 71
BlueHalo, LLC 70
PIC Corporation 65
Network-1 Technologies, Inc. 63
Arnold & Richter Cine Technik GmbH & Co. Betriebs KG 53
Loading...