Patents by Inventor Wah Yau Wong

Wah Yau Wong 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: 11931422
    Abstract: Pharmaceutical compositions comprising antibody-urease conjugates and substantially free of unconjugated urease are disclosed. These compositions are prepared by a method that does not require chromatographic purification. These pharmaceutical compositions have utility in the treatment of cancer by antibody-directed enzyme prodrug therapy wherein the urease converts endogenous urea into ammonia in situ to induce cytotoxicity.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: March 19, 2024
    Assignee: HELIX BIOPHARMA CORPORATION
    Inventors: Heman Chao, Wah Yau Wong, Baomin Tian, Kimberly Jayne Gaspar, Praveen Kumar
  • Patent number: 11466088
    Abstract: Compositions and methods for treating cancer in humans are provided using CARs. The invention includes engineered CARs (chimeric receptor antigens) and genetically modified immune cells that express such a CAR with a high affinity for VEGFR. More specifically, the cells are CAR-T cells recognizing VEGFR-2 on solid tumors, uses thereof, compositions thereof and methods of making. The invention includes therapeutic methods to treat VEGFR-2 dependent cancers targeting tumor angiogenesis. A chimeric antigen receptor (CAR) that binds to VEGFR-2, an epitope or fragment thereof, or a variant thereof.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: October 11, 2022
    Assignee: Helix BioPharma Corp.
    Inventors: Heman Lap Man Chao, Wah Yau Wong, Baomin Tian, Marni Diane Uger
  • Patent number: 11242386
    Abstract: A chimeric antigen receptor (CAR) that binds to CEACAM6, an epitope or fragment thereof, or a variant thereof.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: February 8, 2022
    Inventors: Heman Lap Man Chao, Wah Yau Wong, Baomin Tian, Lakshmi Krishnan, Jamshid Tanha, Marni Diane Uger
  • Publication number: 20200362387
    Abstract: Methods and compositions to restore function to acidified T cells are provided. The methods comprise administering urease to the T cells. Compositions comprise urease.
    Type: Application
    Filed: April 13, 2020
    Publication date: November 19, 2020
    Inventors: Wah Yau Wong, Baomin Tian, Kim Gaspar, Marni Diane Uger, Sven Rohmann, Heman Lap Man Chao
  • Patent number: 10640806
    Abstract: Methods and compositions to restore function to acidified T cells are provided. The methods comprise administering urease to the T cells. Compositions comprise urease.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: May 5, 2020
    Assignee: Helix BioPharma Corp.
    Inventors: Wah Yau Wong, Baomin Tian, Kim Gaspar, Marni Diane Uger, Sven Rohmann, Heman Lap Man Chao
  • Publication number: 20180243437
    Abstract: A conjugate comprising an anti-VEGFR-2 antibody moiety conjugated to a urease moiety is described.
    Type: Application
    Filed: January 4, 2018
    Publication date: August 30, 2018
    Inventors: Heman Lap Man Chao, Wah Yau Wong, Baomin Tian, Marni Diane Uger
  • Publication number: 20180244784
    Abstract: Single domain anti-VEGFR-2 antibodies and fragments thereof and variants thereof and uses thereof, for example, for use to inhibit/decrease angiogenesis and induce tumor regression.
    Type: Application
    Filed: January 4, 2018
    Publication date: August 30, 2018
    Inventors: Heman Lap Man Chao, Wah Yau Wong, Baomin Tian, Marni Diane Uger
  • Publication number: 20180230219
    Abstract: Compositions and methods for treating cancer in humans are provided using CARs. The invention includes engineered CARs (chimeric receptor antigens) and genetically modified immune cells that express such a CAR with a high affinity for VEGFR. More specifically, the cells are CAR-T cells recognizing VEGFR-2 on solid tumors, uses thereof, compositions thereof and methods of making. The invention includes therapeutic methods to treat VEGFR-2 dependent cancers targeting tumor angiogenesis. A chimeric antigen receptor (CAR) that binds to VEGFR-2, an epitope or fragment thereof, or a variant thereof.
    Type: Application
    Filed: January 4, 2018
    Publication date: August 16, 2018
    Inventors: Heman Lap Man Chao, Wah Yau Wong, Baomin Tian, Marni Diane Uger
  • Publication number: 20180087088
    Abstract: Methods and compositions to restore function to acidified T cells are provided. The methods comprise administering urease to the T cells. Compositions comprise urease.
    Type: Application
    Filed: September 22, 2017
    Publication date: March 29, 2018
    Inventors: Wah Yau Wong, Baomin Tian, Kim Gaspar, Marni Diane Uger, Sven Rohmann, Heman Lap Man Chao
  • Publication number: 20180016337
    Abstract: A chimeric antigen receptor (CAR) that binds to CEACAM6, an epitope or fragment thereof, or a variant thereof.
    Type: Application
    Filed: July 17, 2017
    Publication date: January 18, 2018
    Inventors: Heman Lap Man CHAO, Wah Yau WONG, Baomin TIAN, Lakshmi KRISHNAN, Jamshid TANHA, Marni Diane UGER
  • Publication number: 20180000963
    Abstract: Pharmaceutical compositions comprising antibody-urease conjugates and substantially free of unconjugated urease are disclosed. These compositions are prepared by a method that does not require chromatographic purification. These pharmaceutical compositions have utility in the treatment of cancer by antibody-directed enzyme prodrug therapy wherein the urease converts endogenous urea into ammonia in situ to induce cytotoxicity.
    Type: Application
    Filed: January 22, 2016
    Publication date: January 4, 2018
    Applicant: HELIX BIOPHARMA CORPORATION
    Inventors: Heman CHAO, Wah Yau WONG, Baomin TIAN, Kimberly Jayne GASPAR, Praveen KUMAR
  • Patent number: 9296819
    Abstract: Human prion protein, PrP, selectively presents the epitope MDEYSNQNN (SEQ ID No. 14) when PrP misfolds. The misfolded form of human PrP is associated with various disease states. The present invention provides an antibody useful to detect and treat such diseases, including cancer such as ovarian cancer and lymphomas, and transmissible spongiform encephalopathies such as CJD. Also provided is an immunoconjugate in which the antibody is conjugated with urease as cytotoxin.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: March 29, 2016
    Assignees: ProMIS Neurosciences Inc., Helix BioPharma Corp.
    Inventors: Marni Diane Uger, Viengthong Chai, Veronica Ciolfi, Neil R. Cashman, Baomin Tian, Wah Yau Wong, Heman Lap-Man Chao
  • Publication number: 20150166668
    Abstract: Human prion protein, PrP, selectively presents the epitope MDEYSNQNN (SEQ ID No. 14) when PrP misfolds. The misfolded form of human PrP is associated with various disease states. The present invention provides an antibody useful to detect and treat such diseases, including cancer such as ovarian cancer and lymphomas, and transmissible spongiform encephalopathies such as CJD. Also provided is an immunoconjugate in which the antibody is conjugated with urease as cytotoxin.
    Type: Application
    Filed: June 11, 2013
    Publication date: June 18, 2015
    Inventors: Marni Diane Uger, Viengthong Chai, Veronica Ciolfi, Neil R. Cashman, Baomin Tian, Wah Yau Wong, Heman Lap-Man Chao