Patents by Inventor David Schaffer

David Schaffer 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).

  • Publication number: 20260053947
    Abstract: Provided herein are variant adeno-associated virus (AAV) capsid proteins having one or more modifications in amino acid sequence relative to a parental AAV capsid protein, which, when present in an AAV virion, confer increased infectivity of one or more types of retinal cells as compared to the infectivity of the retinal cells by an AAV virion comprising the unmodified parental AAV capsid protein. Also provided are recombinant AAV virions and pharmaceutical compositions thereof comprising a variant AAV capsid protein as described herein, methods of making these rAAV capsid proteins and virions, and methods for using these rAAV capsid proteins and virions in research and clinical practice, for example in, e.g., the delivery of nucleic acid sequences to one or more cells of the retina for the treatment of retinal disorders and diseases.
    Type: Application
    Filed: August 15, 2025
    Publication date: February 26, 2026
    Applicant: 4D MOLECULAR THERAPEUTICS INC.
    Inventors: David H. KIRN, Melissa KOTTERMAN, David SCHAFFER
  • Publication number: 20250163469
    Abstract: Provided herein are variant adeno-associated virus (AAV) capsid proteins having one or more modifications in amino acid sequence relative to a parental AAV capsid protein, which, when present in an AAV virion, confer increased infectivity of one or more types of muscle cells as compared to the infectivity of the muscle cells by an AAV virion comprising the unmodified parental AAV capsid protein. Also provided are recombinant AAV virions and pharmaceutical compositions thereof comprising a variant AAV capsid protein as described herein, methods of making these rAAV capsid proteins and virions, and methods for using these rAAV capsid proteins and virions in research and in clinical practice, for example in, e.g., the delivery of nucleic acid sequences to one or more muscle cells for the treatment of muscle disorders and diseases.
    Type: Application
    Filed: December 12, 2024
    Publication date: May 22, 2025
    Applicant: 4D MOLECULAR THERAPEUTICS INC.
    Inventors: David H. Kirn, Melissa KOTTERMAN, David SCHAFFER
  • Patent number: 12221616
    Abstract: Provided herein are variant adeno-associated virus (AAV) capsid proteins having one or more modifications in amino acid sequence relative to a parental AAV capsid protein, which, when present in an AAV virion, confer increased infectivity of one or more types of muscle cells as compared to the infectivity of the muscle cells by an AAV virion comprising the unmodified parental AAV capsid protein. Also provided are recombinant AAV virions and pharmaceutical compositions thereof comprising a variant AAV capsid protein as described herein, methods of making these rAAV capsid proteins and virions, and methods for using these rAAV capsid proteins and virions in research and in clinical practice, for example in, e.g., the delivery of nucleic acid sequences to one or more muscle cells for the treatment of muscle disorders and diseases.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: February 11, 2025
    Assignee: AD Molecular Therapeutics Inc.
    Inventors: David H. Kirn, Melissa Kotterman, David Schaffer
  • Publication number: 20240335560
    Abstract: Provided herein are variant adeno-associated virus (AAV) capsid proteins having one or more modifications in amino acid sequence relative to a parental AAV capsid protein, which, when present in an AAV virion, confer increased infectivity of one or more types of retinal cells as compared to the infectivity of the retinal cells by an AAV virion comprising the unmodified parental AAV capsid protein. Also provided are recombinant AAV virions and pharmaceutical compositions thereof comprising a variant AAV capsid protein as described herein, methods of making these rAAV capsid proteins and virions, and methods for using these rAAV capsid proteins and virions in research and in clinical practice, for example in, e.g., the delivery of nucleic acid sequences to one or more cells of the retina, for the treatment of retinal disorders and diseases.
    Type: Application
    Filed: September 13, 2023
    Publication date: October 10, 2024
    Applicant: 4D MOLECULAR THERAPEUTICS INC
    Inventors: David H. Kirn, Melissa KOTTERMAN, David SCHAFFER, Paul SZYMANSKI, Peter FRANCIS
  • Patent number: 11939355
    Abstract: The present disclosure provides AAV variants that exhibit a preference for retrograde movement in neurons and methods of using such variants.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: March 26, 2024
    Assignee: Howard Hughes Medical Institute
    Inventors: Joshua Dudman, Adam Hantman, Bum-Yeol Hwang, Alla Karpova, Loren Looger, Kimberly Ritola, David Schaffer, Dougal Gowanlock Robinson Tervo, Sarada Viswanathan
  • Publication number: 20240066145
    Abstract: Provided herein are variant adeno-associated virus (AAV) capsid proteins having one or more modifications in amino acid sequence relative to a parental AAV capsid protein, which, when present in an AAV virion, confer increased infectivity of one or more types of retinal cells as compared to the infectivity of the retinal cells by an AAV virion comprising the unmodified parental AAV capsid protein. Also provided are recombinant AAV virions and pharmaceutical compositions thereof comprising a variant AAV capsid protein as described herein, methods of making these rAAV capsid proteins and virions, and methods for using these rAAV capsid proteins and virions in research and clinical practice, for example in, e.g., the delivery of nucleic acid sequences to one or more cells of the retina for the treatment of retinal disorders and diseases.
    Type: Application
    Filed: August 10, 2023
    Publication date: February 29, 2024
    Applicant: 4D MOLECULAR THERAPEUTICS INC.
    Inventors: David H. Kirn, Melissa Kotterman, David Schaffer
  • Publication number: 20240018498
    Abstract: The present disclosure provides codon optimized nucleotide sequences encoding hum n alpha-galactosidase A, vectors, and host cells comprising codon optimized alpha-galactosidase A sequences, and methods of treating disorders such as Fabry disease comprising administering to the subject a codon optimized sequence encoding human alpha-galactosidase A.
    Type: Application
    Filed: September 8, 2023
    Publication date: January 18, 2024
    Applicant: 4D MOLECULAR THERAPEUTICS INC.
    Inventors: David H. KIRN, Melissa KOTTERMAN, Peter FRANCIS, David SCHAFFER, Paul SZYMANSKI, Kevin WHITTLESEY
  • Patent number: 11840704
    Abstract: Provided herein are variant adeno-associated virus (AAV) capsid proteins having one or more modifications in amino acid sequence relative to a parental AAV capsid protein, which, when present in an AAV virion, confer increased infectivity of one or more types of muscle cells as compared to the infectivity of the muscle cells by an AAV virion comprising the unmodified parental AAV capsid protein. Also provided are recombinant AAV virions and pharmaceutical compositions thereof comprising a variant AAV capsid protein as described herein, methods of making these rAAV capsid proteins and virions, and methods for using these rAAV capsid proteins and virions in research and in clinical practice, for example in, e.g., the delivery of nucleic acid sequences to one or more muscle cells for the treatment of muscle disorders and diseases.
    Type: Grant
    Filed: December 21, 2022
    Date of Patent: December 12, 2023
    Assignee: 4D Molecular Therapeutics Inc.
    Inventors: David H. Kirn, Melissa Kotterman, David Schaffer
  • Patent number: 11802278
    Abstract: The present disclosure provides codon optimized nucleotide sequences encoding human alpha-galactosidase A, vectors, and host cells comprising codon optimized alpha-galactosidase A sequences, and methods of treating disorders such as Fabry disease comprising administering to the subject a codon optimized sequence encoding human alpha-galactosidase A.
    Type: Grant
    Filed: October 11, 2022
    Date of Patent: October 31, 2023
    Inventors: David H. Kirn, Melissa Kotterman, Peter Francis, David Schaffer, Paul Szymanski, Kevin Whittlesey
  • Publication number: 20230340042
    Abstract: The present disclosure provides codon optimized RPGRorf15 sequences, vectors, and host cells comprising codon optimized RPGRorf15 sequences, and methods of treating retinal disorders such as XLRP comprising administering to the subject a codon optimized RPGRorf15 sequence.
    Type: Application
    Filed: August 30, 2021
    Publication date: October 26, 2023
    Applicant: 4D MOLECULAR THERAPEUTICS INC.
    Inventors: David H. KIRN, Melissa A. KOTTERMAN, David SCHAFFER, Peter FRANCIS
  • Patent number: 11766489
    Abstract: Provided herein are variant adeno-associated virus (AAV) capsid proteins having one or more modifications in amino acid sequence relative to a parental AAV capsid protein, which, when present in an AAV virion, confer increased infectivity of one or more types of retinal cells as compared to the infectivity of the retinal cells by an AAV virion comprising the unmodified parental AAV capsid protein. Also provided are recombinant AAV virions and pharmaceutical compositions thereof comprising a variant AAV capsid protein as described herein, methods of making these rAAV capsid proteins and virions, and methods for using these rAAV capsid proteins and virions in research and in clinical practice, for example in, e.g., the delivery of nucleic acid sequences to one or more cells of the retina for the treatment of retinal disorders and diseases.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: September 26, 2023
    Assignee: 4D Molecular Therapeutics, Inc.
    Inventors: David H. Kirn, Melissa Kotterman, David Schaffer, Paul Szymanski, Peter Francis
  • Patent number: 11766487
    Abstract: Provided herein are variant adeno-associated virus (AAV) capsid proteins having one or more modifications in amino acid sequence relative to a parental AAV capsid protein, which, when present in an AAV virion, confer increased infectivity of one or more types of retinal cells as compared to the infectivity of the retinal cells by an AAV virion comprising the unmodified parental AAV capsid protein. Also provided are recombinant AAV virions and pharmaceutical compositions thereof comprising a variant AAV capsid protein as described herein, methods of making these rAAV capsid proteins and virions, and methods for using these rAAV capsid proteins and virions in research and clinical practice, for example in, e.g., the delivery of nucleic acid sequences to one or more cells of the retina for the treatment of retinal disorders and diseases.
    Type: Grant
    Filed: December 21, 2022
    Date of Patent: September 26, 2023
    Assignee: 4D Molecular Therapeutics Inc.
    Inventors: David H. Kirn, Melissa Kotterman, David Schaffer
  • Publication number: 20230279435
    Abstract: Provided herein are variant adeno-associated virus (AAV) capsid proteins having one or more modifications in amino acid sequence relative to a parental AAV capsid protein, which, when present in an AAV virion, confer increased infectivity of one or more types of muscle cells as compared to the infectivity of the muscle cells by an AAV virion comprising the unmodified parental AAV capsid protein. Also provided are recombinant AAV virions and pharmaceutical compositions thereof comprising a variant AAV capsid protein as described herein, methods of making these rAAV capsid proteins and virions, and methods for using these rAAV capsid proteins and virions in research and in clinical practice, for example in, e.g., the delivery of nucleic acid sequences to one or more muscle cells for the treatment of muscle disorders and diseases.
    Type: Application
    Filed: December 21, 2022
    Publication date: September 7, 2023
    Applicant: 4D MOLECULAR THERAPEUTICS INC.
    Inventors: David H. Kirn, Melissa Kotterman, David Schaffer
  • Publication number: 20230211013
    Abstract: Provided herein are variant adeno-associated virus (AAV) capsid proteins having one or more modifications in amino acid sequence relative to a parental AAV capsid protein, which, when present in an AAV virion, confer increased infectivity of one or more types of retinal cells as compared to the infectivity of the retinal cells by an AAV virion comprising the unmodified parental AAV capsid protein. Also provided are recombinant AAV virions and pharmaceutical compositions thereof comprising a variant AAV capsid protein as described herein, methods of making these rAAV capsid proteins and virions, and methods for using these rAAV capsid proteins and virions in research and clinical practice, for example in, e.g., the delivery of nucleic acid sequences to one or more cells of the retina for the treatment of retinal disorders and diseases.
    Type: Application
    Filed: December 21, 2022
    Publication date: July 6, 2023
    Applicant: 4D MOLECULAR THERAPEUTICS INC.
    Inventors: David H. Kirn, Melissa Kotterman, David Schaffer
  • Publication number: 20230190964
    Abstract: The present disclosure provides codon optimized nucleotide sequences encoding human alpha-galactosidase A, vectors, and host cells comprising codon optimized alpha-galactosidase A sequences, and methods of treating disorders such as Fabry disease comprising administering to the subject a codon optimized sequence encoding human alpha-galactosidase A.
    Type: Application
    Filed: October 11, 2022
    Publication date: June 22, 2023
    Applicant: 4D MOLECULAR THERAPEUTICS INC.
    Inventors: David H. Kirn, Melissa Kotterman, Peter Francis, David Schaffer, Paul Szymanski, Kevin Whittlesey
  • Patent number: 11613766
    Abstract: Provided herein are variant adeno-associated virus (AAV) capsid proteins having one or more modifications in amino acid sequence relative to a parental AAV capsid protein, which, when present in an AAV virion, confer increased infectivity of one or more types of muscle cells as compared to the infectivity of the muscle cells by an AAV virion comprising the unmodified parental AAV capsid protein. Also provided are recombinant AAV virions and pharmaceutical compositions thereof comprising a variant AAV capsid protein as described herein, methods of making these rAAV capsid proteins and virions, and methods for using these rAAV capsid proteins and virions in research and in clinical practice, for example in, e.g., the delivery of nucleic acid sequences to one or more muscle cells for the treatment of muscle disorders and diseases.
    Type: Grant
    Filed: April 12, 2022
    Date of Patent: March 28, 2023
    Assignee: 4 MOLECULAR THERAPEUTICS INC.
    Inventors: David H. Kirn, Melissa Kotterman, David Schaffer
  • Patent number: 11576983
    Abstract: Provided herein are variant adeno-associated virus (AAV) capsid proteins having one or more modifications in amino acid sequence relative to a parental AAV capsid protein, which, when present in an AAV virion, confer increased infectivity of one or more types of retinal cells as compared to the infectivity of the retinal cells by an AAV virion comprising the unmodified parental AAV capsid protein. Also provided are recombinant AAV virions and pharmaceutical compositions thereof comprising a variant AAV capsid protein as described herein, methods of making these rAAV capsid proteins and virions, and methods for using these rAAV capsid proteins and virions in research and clinical practice, for example in, e.g., the delivery of nucleic acid sequences to one or more ceils of the retina for the treatment of retinal disorders and diseases.
    Type: Grant
    Filed: May 17, 2022
    Date of Patent: February 14, 2023
    Assignee: 4D Molecular Therapeutics Inc.
    Inventors: David H. Kirn, Melissa Kotterman, David Schaffer
  • Publication number: 20230001018
    Abstract: Provided herein are variant adeno-associated virus (AAV) capsid proteins having one or more modifications in amino acid sequence relative to a parental AAV capsid protein, which, when present in an AAV virion, confer increased infectivity of one or more types of retinal cells as compared to the infectivity of the retinal cells by an AAV virion comprising the unmodified parental AAV capsid protein. Also provided are recombinant AAV virions and pharmaceutical compositions thereof comprising a variant AAV capsid protein as described herein, methods of making these rAAV capsid proteins and virions, and methods for using these rAAV capsid proteins and virions in research and clinical practice, for example in, e.g., the delivery of nucleic acid sequences to one or more ceils of the retina for the treatment of retinal disorders and diseases.
    Type: Application
    Filed: May 17, 2022
    Publication date: January 5, 2023
    Applicant: 4D MOLECULAR THERAPEUTICS INC.
    Inventors: David H. KIRN, Melissa KOTTERMAN, David SCHAFFER
  • Publication number: 20220290181
    Abstract: The present disclosure provides codon optimized RPGRorf15 sequences, vectors, and host cells comprising codon optimized RPGRorf15 sequences, and methods of treating retinal disorders such as XLRP comprising administering to the subject a codon optimized RPGRorf15 sequence.
    Type: Application
    Filed: May 26, 2022
    Publication date: September 15, 2022
    Inventors: David H. Kirn, Melissa A. Kotterman, David Schaffer, Peter Francis
  • Patent number: 11419949
    Abstract: Provided herein are variant adeno-associated virus (AAV) capsid proteins having one or more modifications in amino acid sequence relative to a parental AAV capsid protein, which, when present in an AAV virion, confer increased infectivity of one or more types of retinal cells as compared to the infectivity of the retinal cells by an AAV virion comprising the unmodified parental AAV capsid protein. Also provided are recombinant AAV virions and pharmaceutical compositions thereof comprising a variant AAV capsid protein as described herein, methods of making these rAAV capsid proteins and virions, and methods for using these rAAV capsid proteins and virions in research and in clinical practice, for example in, e.g., the delivery of nucleic acid sequences to one or more cells of the retina for the treatment of retinal disorders and diseases.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: August 23, 2022
    Assignee: 4D Molecular Therapeutics Inc.
    Inventors: David H. Kirn, Melissa Kotterman, David Schaffer