Patents by Inventor Stephen A. Charles

Stephen A. Charles 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: 12214044
    Abstract: The present invention provides multi-armed high MW polymers containing hydrophilic groups conjugated to Factor VIII, and methods of preparing such polymers.
    Type: Grant
    Filed: February 7, 2023
    Date of Patent: February 4, 2025
    Assignee: KODIAK SCIENCES INC.
    Inventors: Stephen A. Charles, Daniel Victor Perlroth, Li Song, Martin Linsell, Wayne To, Didier Benoit, James Aggen
  • Publication number: 20240293585
    Abstract: The present invention provides multi-armed high MW polymers containing hydrophilic groups and one or more functional agents, and methods of preparing such polymers.
    Type: Application
    Filed: April 17, 2024
    Publication date: September 5, 2024
    Inventors: Stephen A. Charles, Daniel Victor Perlroth, Didier G. Benoit, Lane A. Clizbe, Wayne To, Linda J. Zadik, Jeanne M. Pratt
  • Publication number: 20240197810
    Abstract: The present invention provides random copolymers containing zwitterions and one or more functional agents, and methods of preparing such random copolymers.
    Type: Application
    Filed: October 19, 2023
    Publication date: June 20, 2024
    Inventors: Stephen A. Charles, Daniel Victor Perlroth, Lane A. Clizbe, Didier G. Benoit, Wayne To
  • Patent number: 11819531
    Abstract: The present invention provides random copolymers containing zwitterions and one or more functional agents, and methods of preparing such random copolymers.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: November 21, 2023
    Assignee: Kodiak Sciences Inc.
    Inventors: Stephen A. Charles, D. Victor Perlroth, Lane A. Clizbe, Didier G. Benoit, Wayne To
  • Publication number: 20230277616
    Abstract: The present invention provides random copolymers containing zwitterions and one or more functional agents, and methods of preparing such random copolymers.
    Type: Application
    Filed: April 14, 2016
    Publication date: September 7, 2023
    Inventors: Stephen A. Charles, D. Victor Perlroth, Lane A. Clizbe, Didier G. Benoit, Wayne To
  • Publication number: 20230173081
    Abstract: The present invention provides multi-armed high MW polymers containing hydrophilic groups conjugated to Factor VIII, and methods of preparing such polymers.
    Type: Application
    Filed: February 7, 2023
    Publication date: June 8, 2023
    Inventors: Stephen A. Charles, Daniel Victor Perlroth, Li Song, Martin Linsell, Wayne To, Didier Benoit, James Aggen
  • Publication number: 20230113413
    Abstract: Polymeric reagents are provided comprising a moiety of atoms arranged in a specific order, wherein the moiety is positioned between a water-soluble polymer and a reactive group. The polymeric reagents are useful for, among other things, forming polymer-active agent conjugates. Related methods, compositions, preparations, and so forth are also provided.
    Type: Application
    Filed: August 9, 2022
    Publication date: April 13, 2023
    Inventors: J. Milton Harris, Antoni Kozlowski, Samuel P. McManus, Michael D. Bentley, Stephen A. Charles
  • Patent number: 11590235
    Abstract: The present invention provides multi-armed high MW polymers containing hydrophilic groups conjugated to Factor VIII, and methods of preparing such polymers.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: February 28, 2023
    Assignee: Kodiak Sciences Inc.
    Inventors: Stephen A. Charles, Daniel Victor Perlroth, Li Song, Martin Linsell, Wayne To, Didier Benoit, James Aggen
  • Patent number: 11446385
    Abstract: Polymeric reagents are provided comprising a moiety of atoms arranged in a specific order, wherein the moiety is positioned between a water-soluble polymer and a reactive group. The polymeric reagents are useful for, among other things, forming polymer-active agent conjugates. Related methods, compositions, preparations, and so forth are also provided.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: September 20, 2022
    Assignee: Nektar Therapeutics
    Inventors: J. Milton Harris, Antoni Kozlowski, Samuel P. McManus, Michael D. Bentley, Stephen A. Charles
  • Publication number: 20220096643
    Abstract: The present invention relates to polymeric reagents and conjugates thereof, methods for synthesizing the polymeric reagents and conjugates, pharmaceutical compositions comprising the conjugates and methods of using the polymer conjugates including therapeutic methods where conjugates are administered to patients.
    Type: Application
    Filed: December 16, 2021
    Publication date: March 31, 2022
    Inventor: Stephen A. Charles
  • Publication number: 20220088098
    Abstract: Methods of inhibiting or reducing tumor growth are disclosed. A composition containing at least one selected oncolytic virus is administered within a tumor of a patient. The virus kills cancerous cells and induces a systemic and lasting anti-tumor immunity that is also compatible with other cancer treatments. Also disclosed are methods of creating synthetic viruses for targeting cancerous tumors.
    Type: Application
    Filed: December 6, 2021
    Publication date: March 24, 2022
    Inventors: Peter M. Chumakov, Anastasia V. Lipatova, Stepan P. Chumakov, Natalia D. Tararova, Stephen A. Charles, Anton A. Komar
  • Publication number: 20220088097
    Abstract: Methods of inhibiting or reducing tumor growth are disclosed. A composition containing at least one selected oncolytic virus is administered within a tumor of a patient. The virus kills cancerous cells and induces a systemic and lasting anti-tumor immunity that is also compatible with other cancer treatments. Also disclosed are methods of creating synthetic viruses for targeting cancerous tumors.
    Type: Application
    Filed: December 6, 2021
    Publication date: March 24, 2022
    Inventors: Peter M. Chumakov, Anastasia V. Lipatova, Stepan P. Chumakov, Natalia D. Tararova, Stephen A. Charles, Anton A. Komar
  • Patent number: 11253558
    Abstract: Methods of inhibiting or reducing tumor growth are disclosed. A composition containing at least one selected oncolytic virus is administered within a tumor of a patient. The virus kills cancerous cells and induces a systemic and lasting anti-tumor immunity that is also compatible with other cancer treatments. Also disclosed are methods of creating synthetic viruses for targeting cancerous tumors.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: February 22, 2022
    Inventors: Peter M. Chumakov, Anastasia V. Lipatova, Stepan P. Chumakov, Natalia D. Tararova, Stephen A. Charles, Anton A. Komar
  • Patent number: 11155610
    Abstract: The invention provides a dual VEGF/PDGF antagonist comprising a VEGF antagonist linked to a PDGF antagonist. The VEGF antagonist is an antibody to a VEGF or VEGFR or is a VEGFR extracellular trap segment (i.e., a segment from the extracellular region of one or more VEGFR receptors that inhibits binding of at least one VEGFR to at least one VEGF). The PDGF antagonist is an antibody to a PDGF or PDGFR or is a PDGFR extracellular trap segment (i.e., segment from the extracellular region of one or more PDGFRs, which inhibits binding of at least one PDGFR and at least one PDGF). The dual antagonist is preferably conjugated to a half-life extending moiety, such as a HEMA-PC polymer. The dual antagonist is particularly useful for treating wet aged related macular degeneration.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: October 26, 2021
    Assignee: KODIAK SCIENCES INC.
    Inventors: Daniel Victor Perlroth, Stephen A. Charles, James Aggen, Didier Benoit, Wayne To, Lidia Mosyak, Laura Lin, Justin Cohen, Tetsuya Ishino, William Somers
  • Patent number: 11071771
    Abstract: The present invention provides recombinant butyrylcholinesterase fusion proteins, including Fc fusion proteins and multi-armed high MW polymers containing hydrophilic groups conjugated to the fusion proteins, and methods of preparing such polymers.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: July 27, 2021
    Assignee: Kodiak Sciences Inc.
    Inventors: Daniel Victor Perlroth, Stephen A. Charles, Wayne To, Xiaojian Huang, Martin Linsell, Didier Benoit
  • Publication number: 20200352993
    Abstract: A versatile carrier system for systemic delivery of oncolytic viruses comprises dendritic cells having at least one oncolytic virus loaded therein. It is believed that the dendritic cells will protect the oncolytic virus(es) against neutralizing antibodies, can transport the oncolytic virus(es) to targeted tumor locations, and then deliver virions to the tumor locations.
    Type: Application
    Filed: May 7, 2020
    Publication date: November 12, 2020
    Inventors: Peter M. Chumakov, Darya A. Berzhitskaya, Anastasia V. Lipatova, Stepan P. Chumakov, Natalia D. Tararova, Stephen A. Charles, Anton A. Komar
  • Publication number: 20200261590
    Abstract: The present invention provides multi-armed high MW polymers containing hydrophilic groups conjugated to Factor VIII, and methods of preparing such polymers.
    Type: Application
    Filed: February 4, 2020
    Publication date: August 20, 2020
    Inventors: Stephen A. Charles, D. Victor Perlroth, Li Song, Martin Linsell, Wayne To, Didier Benoit, James Aggen
  • Publication number: 20200262905
    Abstract: The invention provides a dual VEGF/PDGF antagonist comprising a VEGF antagonist linked to a PDGF antagonist. The VEGF antagonist is an antibody to a VEGF or VEGFR or is a VEGFR extracellular trap segment (i.e., a segment from the extracellular region of one or more VEGFR receptors that inhibits binding of at least one VEGFR to at least one VEGF). The PDGF antagonist is an antibody to a PDGF or PDGFR or is a PDGFR extracellular trap segment (i.e., segment from the extracellular region of one or more PDGFRs, which inhibits binding of at least one PDGFR and at least one PDGF). The dual antagonist is preferably conjugated to a half-life extending moiety, such as a HEMA-PC polymer. The dual antagonist is particularly useful for treating wet aged related macular degeneration.
    Type: Application
    Filed: February 19, 2020
    Publication date: August 20, 2020
    Applicant: KODIAK SCIENCES INC.
    Inventors: D. Victor Perlroth, Stephen A. Charles, James Aggen, Didier Benoit, Wayne To, Lidia Mosyak, Laura Lin, Justin Cohen, Tetsuya Ishino, William Somers
  • Publication number: 20200246471
    Abstract: Polymeric reagents are provided comprising a moiety of atoms arranged in a specific order, wherein the moiety is positioned between a water-soluble polymer and a reactive group. The polymeric reagents are useful for, among other things, forming polymer-active agent conjugates. Related methods, compositions, preparations, and so forth are also provided.
    Type: Application
    Filed: April 6, 2020
    Publication date: August 6, 2020
    Inventors: J. Milton Harris, Antoni Kozlowski, Samuel P. McManus, Michael D. Bentley, Stephen A. Charles
  • Patent number: 10702608
    Abstract: The present invention provides multi-armed high MW polymers containing hydrophilic groups conjugated to Factor VIII, and methods of preparing such polymers.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: July 7, 2020
    Assignee: KODIAK SCIENCES INC.
    Inventors: Stephen A. Charles, D. Victor Perlroth, Li Song, Martin Linsell, Wayne To, Didier Benoit, James Aggen