This Opposition was filed at the USPTO Trademark Trial and Appeal Board (TTAB) on October 18, 2022 and assigned serial number 91281247 by the TTAB.

Plaintiff:
Celltrion Holdings Co., Ltd. represented by KISUK LEE of HARNESS, DICKEY & PIERCE, PLC.
Trademark Information: CELLTRION – US Trademark Serial Number 88009871
View Trademark Status at USPTO
View Trademark Documents at USPTO

Defendant:
John Whittaker represented by DANIEL N. SMITH of NEW ENGLAND PATENT & TRADEMARK.
Trademark Information: CELLTRITION – US Trademark Serial Number 88918758
View Trademark Status at USPTO
View Trademark Documents at USPTO

Prosecution History:
October 18, 2022 – FILED AND FEE
October 18, 2022 – NOTICE AND TRIAL DATES SENT; ANSWER DUE:
October 18, 2022 – INSTITUTED
December 08, 2022 – NOTICE OF DEFAULT
January 18, 2023 – BD DECISION: OPP SUSTAINED
January 18, 2023 – TERMINATED
View this TTAB Proceeding at USPTO

About Select IP
Select IP Law Corporation monitors TTAB proceedings that have been instituted. We are experts in trademark law. If you are interested in connecting with an IP law attorney or patent law attorney, please contact us via the contact form.