Patents by Inventor Seah Lim

Seah Lim 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: 12673991
    Abstract: This disclosure relates to dimeric immunotherapeutics that comprise an IgG that is crosslinked with a disulfide bond. The IgG may include two heavy chains including a cysteine mutation that forms the disulfide bond. The dimeric immunotherapeutics are formed by increasing the concentration of the IgG such that spontaneous dimerization via the formation of disulfide bonds between the IgG molecules occurs over time.
    Type: Grant
    Filed: August 30, 2024
    Date of Patent: July 7, 2026
    Assignee: MEDICOVESTOR, INC.
    Inventor: Seah Lim
  • Patent number: 12649790
    Abstract: This disclosure describes proteins that specifically bind human sperm protein 17 (Sp17) with nanomolar affinity and high specificity. These proteins include a recombinant human anti-Sp17 IgG that is suitable for use as a therapeutic antibody to treat cancers that ectopically express Sp17. Other Sp17-binding proteins are described including antibody fragments, antibody conjugates, and fusion proteins.
    Type: Grant
    Filed: January 9, 2024
    Date of Patent: June 9, 2026
    Assignee: MEDICOVESTOR, INC.
    Inventor: Seah Lim
  • Patent number: 12624097
    Abstract: This disclosure describes proteins that specifically bind human sperm protein 17 (Sp17) with nanomolar affinity and high specificity. These proteins include a recombinant human anti-Sp17 IgG that is suitable for use as a therapeutic antibody to treat cancers that ectopically express Sp17. Other Sp17-binding proteins are described including antibody fragments, antibody conjugates, and fusion proteins.
    Type: Grant
    Filed: January 9, 2024
    Date of Patent: May 12, 2026
    Assignee: MEDICOVESTOR, INC.
    Inventor: Seah Lim
  • Patent number: 12616756
    Abstract: This disclosure relates to dimeric immunotherapeutics that comprise two IgGs that are crosslinked with a disulfide bond. The two IgGs may be chimeras of two different heavy chains, in which one heavy chain includes a cysteine mutation that forms the disulfide bond, and the other heavy chain lacks the cysteine mutation. The presence of a cysteine mutation in only one of the heavy chains of an IgG avoids two disulfide bonds between the two IgGs, which increases the accessible orientations between the two crosslinked IgGs, and also avoids the formation of trimers and higher-order oligomers.
    Type: Grant
    Filed: August 16, 2024
    Date of Patent: May 5, 2026
    Assignee: MEDICOVESTOR, INC.
    Inventor: Seah Lim
  • Patent number: 12600795
    Abstract: This disclosure relates to dimeric immunotherapeutics that comprise an IgG that is crosslinked with a disulfide bond. The IgG may include two heavy chains including a cysteine mutation that forms the disulfide bond. The dimeric immunotherapeutics are formed by increasing the concentration of the IgG such that spontaneous dimerization via the formation of disulfide bonds between the IgG molecules occurs over time.
    Type: Grant
    Filed: August 30, 2024
    Date of Patent: April 14, 2026
    Assignee: MEDICOVESTOR, INC.
    Inventor: Seah Lim
  • Patent number: 12577321
    Abstract: This disclosure relates to dimeric immunotherapeutics that comprise an IgG that is crosslinked with a disulfide bond. The IgG may include two heavy chains including a cysteine mutation that forms the disulfide bond. The dimeric immunotherapeutics are formed by increasing the concentration of the IgG such that spontaneous dimerization via the formation of disulfide bonds between the IgG molecules occurs over time.
    Type: Grant
    Filed: August 30, 2024
    Date of Patent: March 17, 2026
    Assignee: MEDICOVESTOR, INC.
    Inventor: Seah Lim
  • Publication number: 20260001950
    Abstract: This disclosure describes methods and drug therapies for treating or preventing various health conditions, including cancer. The methods and therapies of the present disclosure comprise antibody-based therapies that functionally increase antibody binding to target antigens. Specifically, the antibody-based therapies increase the copy number of an antigen by utilizing at least a pair of differing antibodies directed at non-overlapping epitopes of the same antigen for effectively delivering payloads to a target cell. Each differing antibody may be conjugated to the same or a differing payload. The antibody-based therapy may use proteins that specifically bind human folate receptor alpha (FRalpha) with high affinity. These proteins include a human anti-FRalpha IgG1 that is suitable for use as a therapeutic antibody to treat conditions, such as cancers that express FRalpha. Other FRalpha-binding proteins are also described including antibody fragments, antibody conjugates, and fusion proteins.
    Type: Application
    Filed: February 17, 2025
    Publication date: January 1, 2026
    Inventor: Seah Lim
  • Publication number: 20250255994
    Abstract: This disclosure relates to dimeric immunoconjugates for use in treating cancer generally and to dimeric immunoconjugates that bind human sperm protein 17 (Sp17) specifically. A dimeric immunoconjugate of this disclosure generally comprises a first monomeric antibody that carries a first payload and a second monomeric antibody that carries a second payload, wherein the first payload and the second payload are different. Such dimeric immunoconjugates advantageously allow the simultaneous delivery of two chemotherapeutics to a cancer cell, which allows for synergistic antineoplastic activity.
    Type: Application
    Filed: November 29, 2024
    Publication date: August 14, 2025
    Inventor: Seah Lim
  • Publication number: 20250250334
    Abstract: This disclosure describes proteins that specifically bind human folate receptor alpha (FRalpha) with high affinity. These proteins include a recombinant human anti-FRalpha IgG1 that is suitable for use as a therapeutic antibody to treat cancers that express FRalpha. Other FRalpha-binding proteins are also described including antibody fragments, antibody conjugates, and fusion proteins.
    Type: Application
    Filed: February 2, 2024
    Publication date: August 7, 2025
    Inventor: Seah Lim
  • Patent number: 12378314
    Abstract: This disclosure describes proteins that specifically bind human folate receptor alpha (FRalpha) with high affinity. These proteins include a recombinant human anti-FRalpha IgG1 that is suitable for use as a therapeutic antibody to treat cancers that express FRalpha. Other FRalpha-binding proteins are also described including antibody fragments, antibody conjugates, and fusion proteins.
    Type: Grant
    Filed: February 2, 2024
    Date of Patent: August 5, 2025
    Assignee: MEDICOVESTOR, INC.
    Inventor: Seah Lim
  • Patent number: 12371494
    Abstract: This disclosure relates to dimeric immunotherapeutics that comprise two IgGs that are crosslinked with a disulfide bond. The two IgGs may be chimeras of two different heavy chains, in which one heavy chain includes a cysteine mutation that forms the disulfide bond, and the other heavy chain lacks the cysteine mutation. The presence of a cysteine mutation in only one of the heavy chains of an IgG avoids two disulfide bonds between the two IgGs, which increases the accessible orientations between the two crosslinked IgGs, and also avoids the formation of trimers and higher-order oligomers.
    Type: Grant
    Filed: August 16, 2024
    Date of Patent: July 29, 2025
    Assignee: MEDICOVESTOR, INC.
    Inventor: Seah Lim
  • Patent number: 12364777
    Abstract: This disclosure relates to homodimeric antibodies for use in treating cancer generally and to both homodimeric antibodies that bind human sperm protein 17 (Sp17) and homodimeric antibody immunoconjugates specifically. Such homodimeric antibodies display improved properties relative to monomeric antibodies, for example, because they can crosslink cells, improve cellular uptake, and/or carry greater payloads.
    Type: Grant
    Filed: January 29, 2024
    Date of Patent: July 22, 2025
    Assignee: MEDICOVESTOR, INC.
    Inventor: Seah Lim
  • Publication number: 20250205354
    Abstract: This disclosure relates to dimeric immunotherapeutics that comprise two IgGs that are crosslinked with a disulfide bond. The two IgGs may be chimeras of two different heavy chains, in which one heavy chain includes a cysteine mutation that forms the disulfide bond, and the other heavy chain lacks the cysteine mutation. The presence of a cysteine mutation in only one of the heavy chains of an IgG avoids two disulfide bonds between the two IgGs, which increases the accessible orientations between the two crosslinked IgGs, and also avoids the formation of trimers and higher-order oligomers.
    Type: Application
    Filed: August 16, 2024
    Publication date: June 26, 2025
    Inventor: Seah Lim
  • Publication number: 20250206847
    Abstract: This disclosure relates to dimeric immunotherapeutics that comprise two IgGs that are crosslinked with a disulfide bond. The two IgGs may be chimeras of two different heavy chains, in which one heavy chain includes a cysteine mutation that forms the disulfide bond, and the other heavy chain lacks the cysteine mutation. The presence of a cysteine mutation in only one of the heavy chains of an IgG avoids two disulfide bonds between the two IgGs, which increases the accessible orientations between the two crosslinked IgGs, and also avoids the formation of trimers and higher-order oligomers.
    Type: Application
    Filed: December 26, 2024
    Publication date: June 26, 2025
    Inventor: Seah Lim
  • Publication number: 20250206816
    Abstract: This disclosure relates to dimeric immunotherapeutics that comprise an IgG that is crosslinked with a disulfide bond. The IgG may include two heavy chains including a cysteine mutation that forms the disulfide bond. The dimeric immunotherapeutics are formed by increasing the concentration of the IgG such that spontaneous dimerization via the formation of disulfide bonds between the IgG molecules occurs over time.
    Type: Application
    Filed: August 30, 2024
    Publication date: June 26, 2025
    Inventor: Seah Lim
  • Publication number: 20250206817
    Abstract: This disclosure relates to dimeric immunotherapeutics that comprise two IgGs that are crosslinked with a disulfide bond. The two IgGs may be chimeras of two different heavy chains, in which one heavy chain includes a cysteine mutation that forms the disulfide bond, and the other heavy chain lacks the cysteine mutation. The presence of a cysteine mutation in only one of the heavy chains of an IgG avoids two disulfide bonds between the two IgGs, which increases the accessible orientations between the two crosslinked IgGs, and also avoids the formation of trimers and higher-order oligomers.
    Type: Application
    Filed: August 16, 2024
    Publication date: June 26, 2025
    Inventor: Seah Lim
  • Publication number: 20250206842
    Abstract: This disclosure relates to dimeric immunotherapeutics that comprise an IgG that is crosslinked with a disulfide bond. The IgG may include two heavy chains including a cysteine mutation that forms the disulfide bond. The dimeric immunotherapeutics are formed by increasing the concentration of the IgG such that spontaneous dimerization via the formation of disulfide bonds between the IgG molecules occurs over time.
    Type: Application
    Filed: August 30, 2024
    Publication date: June 26, 2025
    Inventor: Seah Lim
  • Patent number: 12319747
    Abstract: This disclosure describes proteins that specifically bind human sperm protein 17 (Sp17) with nanomolar affinity and high specificity. These proteins include a recombinant human anti-Sp17 IgG that is suitable for use as a therapeutic antibody to treat cancers that ectopically express Sp17. Other Sp17-binding proteins are described including antibody fragments, antibody conjugates, and fusion proteins.
    Type: Grant
    Filed: January 9, 2024
    Date of Patent: June 3, 2025
    Assignee: MEDICOVESTOR, INC.
    Inventor: Seah Lim
  • Publication number: 20250127942
    Abstract: This disclosure relates to homodimeric antibodies for use in treating cancer generally and to both homodimeric antibodies that bind human sperm protein 17 (Sp17) and homodimeric antibody immunoconjugates specifically. Such homodimeric antibodies display improved properties relative to monomeric antibodies, for example, because they can crosslink cells, improve cellular uptake, and/or carry greater payloads.
    Type: Application
    Filed: January 29, 2024
    Publication date: April 24, 2025
    Inventor: Seah Lim
  • Patent number: 12258396
    Abstract: This disclosure describes methods of using proteins that specifically bind human folate receptor alpha (FRalpha) with high affinity. These proteins include a recombinant human anti-FRalpha IgG1 that is suitable for use as a therapeutic antibody to treat cancers that express FRalpha. Other FRalpha-binding proteins are also described including antibody fragments, antibody conjugates, and fusion proteins.
    Type: Grant
    Filed: February 2, 2024
    Date of Patent: March 25, 2025
    Assignee: MEDICOVESTOR, INC.
    Inventor: Seah Lim