The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 09, 2025
Filed:
Sep. 07, 2020
Biotheus Inc., Guangdong, CN;
Yifeng Xu, Guangdong, CN;
Tianhang Zhai, Guangdong, CN;
Zhijun Yuan, Guangdong, CN;
Andy Tsun, Guangdong, CN;
Tsoyue Joanne Sun, Guangdong, CN;
Weifeng Huang, Guangdong, CN;
BIOTHEUS INC., Guangdong, CN;
Abstract
Provided is a complementary determining region (CDR) of a VHH chain of an anti-PD-L1 single-domain antibody, wherein the CDR of the VHH chain includes the following: CDR1 with an amino acid sequence as shown in SEQ ID NO:5n+1; CDR2 with an amino acid sequence as shown in SEQ ID NO:5n+2, or CDR2 with an amino acid sequence having an sequence identity of greater than 85% with a sequence as shown in SEQ ID NO:2; and CDR3 with an amino acid sequence as shown in SEQ ID NO: 5n+3; wherein, each n is independently 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 or 15.