Seagen Inc. vs. Guangzhou Sinogen Pharmaceutical Co., Ltd. – Trademark Opposition TTAB Proceeding 91282294
This Opposition was filed at the USPTO Trademark Trial and Appeal Board (TTAB) on December 12, 2022 and assigned serial number 91282294 by the TTAB. Plaintiff: Seagen Inc. represented by STEVEN P. HOLLMAN of SHEPPARD MULLIN RICHTER & HAMPTON LLP. Trademark Information: SEAGEN – US Trademark Serial Number 87490660View Trademark Status at USPTOView Trademark Documents…
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