Patents by Inventor Pei Ye

Pei Ye has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11970541
    Abstract: The present invention relates to a humanized anti-CD20 antibody that comprises an antigen binding site containing heavy and light chain of obinutuzumab (GAZYVA®), and N-linked oligosaccharides that are attached to the Fc region of the antibody, wherein the N-linked oligosaccharides are not bisected by N-acetylglucosamine. The antibody of the present invention comprises fucose glycotype in an amount of no more than 10% of the total N-glycans that are attached to the Fc region of the antibody. The anti-CD20 of the present invention has antibody dependent cell-mediated cytotoxicity (ADCC) about 2 times stronger than that of GAZYVA® and about 50 to 100 times stronger than that of RITUXAN®. The anti-CD20 antibodies are effective for treating CD20 expressing cancer, such as non-Hodgkin's lymphoma, B cell lymphoma, chronic lymphocytic leukemia, or follicular lymphoma.
    Type: Grant
    Filed: November 19, 2021
    Date of Patent: April 30, 2024
    Assignee: BEIJING MABWORKS BIOTECH CO. LTD.
    Inventors: Feng Li, Boyan Zhang, Pei Ye
  • Publication number: 20240112892
    Abstract: A plasma processing apparatus 10 includes: a first support member 81 for raising and lowering an object to be processed 200, a second support member 82 supporting a cover 70, a drive part 120 for raising and lowering the cover 70 via the second support member 82. The drive part 120, when raising the cover 70 from a lowered position to a raised position, in a first process, raises the second support member 82 without raising the first support member 81, and thus to raise the cover 70 without raising the object to be processed 200, and in a second process, raises the first and second support members 81 and 82 integrally, and thus to raise the cover 70 from the beginning of the second process, and raise the object to be processed 200 from the beginning of or after the beginning of the second process.
    Type: Application
    Filed: September 15, 2023
    Publication date: April 4, 2024
    Inventor: Pei YE
  • Publication number: 20220064321
    Abstract: The present invention relates to a humanized anti-CD20 antibody that comprises an antigen binding site containing heavy and light chain of obinutuzumab (GAZYVA®), and N-linked oligosaccharides that are attached to the Fc region of the antibody, wherein the N-linked oligosaccharides are not bisected by N-acetylglucosamine. The antibody of the present invention comprises fucose glycotype in an amount of no more than 10% of the total N-glycans that are attached to the Fc region of the antibody. The anti-CD20 of the present invention has antibody dependent cell-mediated cytotoxicity (ADCC) about 2 times stronger than that of GAZYVA® and about 50 to 100 times stronger than that of RITUXAN®. The anti-CD20 antibodies are effective for treating CD20 expressing cancer, such as non-Hodgkin's lymphoma, B cell lymphoma, chronic lymphocytic leukemia, or follicular lymphoma.
    Type: Application
    Filed: November 19, 2021
    Publication date: March 3, 2022
    Inventors: Feng LI, Boyan ZHANG, Pei YE
  • Patent number: 11208492
    Abstract: The present invention relates to a humanized anti-CD20 antibody that comprises an antigen binding site containing heavy and light chain of obinutuzumab (GAZYVA®), and N-linked oligosaccharides that are attached to the Fc region of the antibody, wherein the N-linked oligosaccharides are not bisected by N-acetylglucosamine. The antibody of the present invention comprises fucose glycotype in an amount of no more than 10% of the total N-glycans that are attached to the Fc region of the antibody. The anti-CD20 of the present invention has antibody dependent cell-mediated cytotoxicity (ADCC) about 2 times stronger than that of GAZYVA® and about 50 to 100 times stronger than that of RITUXAN®. The anti-CD20 antibodies are effective for treating CD20 expressing cancer, such as non-Hodgkin's lymphoma, B cell lymphoma, chronic lymphocytic leukemia, or follicular lymphoma.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: December 28, 2021
    Assignee: BEIJING MABWORKS BIOTECH CO. LTD.
    Inventors: Feng Li, Boyan Zhang, Pei Ye
  • Patent number: 10377833
    Abstract: The present invention relates to humanized bispecific anti-HER2 antibodies that comprise one antigen binding site containing variable regions of heavy and light chain of trastuzumab, and another antigen binding site containing variable regions of heavy and light chain of pertuzumab. The bispecific anti-HER2 antibodies is effective for treating cancer, such as breast cancer, gastric cancer, or ovarian cancer. Preferred bispecific anti-HER antibodies of the present invention are afucosylated antibodies. The present invention also relates to Chinese Hamster ovary (CHO) mutant cell line that has a dysfunctional Slc35C1 gene, which is the only dysfunctional gene in the mutant that affects glycan regulation.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: August 13, 2019
    Assignee: Beijing Mabworks Biotech Co., Ltd.
    Inventors: Feng Li, Boyan Zhang, Pei Ye, Jian Zhao, Sijia Huang, Chunyang Jin
  • Publication number: 20190177423
    Abstract: The present invention relates to a humanized anti-CD20 antibody that comprises an antigen binding site containing heavy and light chain of obinutuzumab (GAZYVA®), and N-linked oligosaccharides that are attached to the Fc region of the antibody, wherein the N-linked oligosaccharides are not bisected by N-acetylglucosamine. The antibody of the present invention comprises fucose glycotype in an amount of no more than 10% of the total N-glycans that are attached to the Fc region of the antibody. The anti-CD20 of the present invention has antibody dependent cell-mediated cytotoxicity (ADCC) about 2 times stronger than that of GAZYVA® and about 50 to 100 times stronger than that of RITUXAN®. The anti-CD20 antibodies are effective for treating CD20 expressing cancer, such as non-Hodgkin's lymphoma, B cell lymphoma, chronic lymphocytic leukemia, or follicular lymphoma.
    Type: Application
    Filed: February 13, 2019
    Publication date: June 13, 2019
    Inventors: Feng Li, Boyan Zhang, Pei Ye
  • Publication number: 20180022820
    Abstract: The present invention relates to humanized bispecific anti-HER2 antibodies that comprise one antigen binding site containing variable regions of heavy and light chain of trastuzumab, and another antigen binding site containing variable regions of heavy and light chain of pertuzumab. The bispecific anti-HER2 antibodies is effective for treating cancer, such as breast cancer, gastric cancer, or ovarian cancer. Preferred bispecific anti-HER antibodies of the present invention are afucosylated antibodies. The present invention also relates to Chinese Hamster ovary (CHO) mutant cell line that has a dysfunctional Slc35C1 gene, which is the only dysfunctional gene in the mutant that affects glycan regulation.
    Type: Application
    Filed: July 21, 2017
    Publication date: January 25, 2018
    Inventors: Feng Li, Boyan Zhang, Pei Ye, Jian Zhao, Sijia Huang, Chunyang Jin
  • Patent number: 9745382
    Abstract: The present invention relates to humanized bispecific anti-HER2 antibodies that comprise one antigen binding site containing variable regions of heavy and light chain of trastuzumab, and another antigen binding site containing variable regions of heavy and light chain of pertuzumab. The bispecific anti-HER2 antibodies is effective for treating cancer, such as breast cancer, gastric cancer, or ovarian cancer. Preferred bispecific anti-HER antibodies of the present invention are afucosylated antibodies.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: August 29, 2017
    Assignee: Beijing Mabworks Biotech Co. Ltd.
    Inventors: Feng Li, Boyan Zhang, Pei Ye, Jian Zhao, Sijia Huang, Chunyang Jin
  • Publication number: 20070231856
    Abstract: A method is provided for expressing recombinant proteins and polypeptides such as human serum albumin (HSA), human growth hormone (HGH), or insulin-like growth factor-I (IGF-1) in large quantities using a methylotropic or ethylotropic microorganism such as a yeast, bacteria or fungi using a dilute methanol or ethanol feeding strategy which provides for a lower flash point and can minimize the likelihood of dangerous explosion. The present invention is thus advantageous because it allows recombinant proteins to be produced on a large scale in non-explosion proof plants without the hazards associated with the use of 100% methanol which generally Ces not meet OSHA requirements, and can thus allow the safe and efficient production of large quantities of recombinant proteins and other biomaterials at a far reduced cost.
    Type: Application
    Filed: June 1, 2004
    Publication date: October 4, 2007
    Inventors: Pei Ye, Daniel Carter