Patents by Inventor Piotr Bobrowicz

Piotr Bobrowicz 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: 20190079098
    Abstract: The present invention relates, inter alia, to polyspecificity reagents, methods of making the same, and methods of using the same in, inter alia, the selection, screening, enrichment, and identification of non-polyspecific, and thus developable, polypeptides.
    Type: Application
    Filed: November 20, 2018
    Publication date: March 14, 2019
    Inventors: Piotr Bobrowicz, Amber D. Hanna, Jerry M. Thomas
  • Publication number: 20190060454
    Abstract: The present disclosure relates to compounds (e.g., antibodies, or antigen-binding fragments thereof) that bind to an epitope of CD137 and agonize CD137, and to use of the compounds in methods for treating, or ameliorating one or more symptoms of, cancer.
    Type: Application
    Filed: November 9, 2018
    Publication date: February 28, 2019
    Inventors: Piotr BOBROWICZ, Paul WIDBOOM, Michael March SCHMIDT, Jason M. LAJOIE, Robert V. TIGHE, III, Cheuk Lun LEUNG, Ugur ESKIOCAK
  • Publication number: 20190055546
    Abstract: Methods for display of recombinant whole immunoglobulins or immunoglobulin libraries on the surface of eukaryote host cells, including yeast and filamentous fungi, are described. The methods are useful for screening libraries of recombinant immunoglobulins in eukaryote host cells to identify immunoglobulins that are specific for an antigen of interest.
    Type: Application
    Filed: October 3, 2018
    Publication date: February 21, 2019
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Bianka Prinz, Natarajan Sethuraman, Dongxing Zha, Stefan Wildt, Piotr Bobrowicz
  • Publication number: 20190031785
    Abstract: Provided herein are multispecific immunomodulatory antigen-binding constructs (MIACs) and compositions comprising the constructs. Also provided are methods of using the constructs and methods of making the constructs.
    Type: Application
    Filed: January 13, 2017
    Publication date: January 31, 2019
    Inventors: Thomas Joseph SCHUETZ, Piotr BOBROWICZ, Helen SABZEVARI, Michael March SCHMIDT, Robert V. TIGHE, III, Simon METENOU
  • Publication number: 20190015508
    Abstract: The present disclosure relates to, inter alia, compounds (e.g., antibodies, or antigen-binding fragments thereof) that bind to an epitope of CD137 and agonize CD137, and to use of the compounds in methods for treating, or ameliorating one or more symptoms of, cancer.
    Type: Application
    Filed: September 6, 2018
    Publication date: January 17, 2019
    Inventors: Piotr Bobrowicz, Paul Widboom, Michael March Schmidt, Jason M. Lajoie, Robert V. Tighe, III, Cheuk Lun Leung, Ugur Eskiocak
  • Patent number: 10156574
    Abstract: The present invention relates, inter alia, to polyspecificity reagents, methods of making the same, and methods of using the same in, inter alia, the selection, screening, enrichment, and identification of non-polyspecific, and thus developable, polypeptides.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: December 18, 2018
    Assignee: Adimab, LLC
    Inventors: Piotr Bobrowicz, Amber D. Hanna, Jerry M. Thomas
  • Publication number: 20180318417
    Abstract: Provided herein are multispecific immunomodulatory antigen-binding constructs (MIACs) and compositions comprising the constructs. Also provided are methods of using the constructs and methods of making the constructs.
    Type: Application
    Filed: January 13, 2016
    Publication date: November 8, 2018
    Inventors: Thomas Joseph SCHUETZ, Piotr BOBROWICZ, Helen SABZEVARI, Michael March SCHMIDT, Robert V. TIGHE, III, Simon METENOU
  • Publication number: 20170327817
    Abstract: Methods for display of recombinant whole immunoglobulins or immunoglobulin libraries on the surface of eukaryote host cells, including yeast and filamentous fungi, are described. The methods are useful for screening libraries of recombinant immunoglobulins in eukaryote host cells to identify immunoglobulins that are specific for an antigen of interest.
    Type: Application
    Filed: January 27, 2016
    Publication date: November 16, 2017
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Bianka Prinz, Natarajan Sethuraman, Dongxing Zha, Stefan Wildt, Piotr Bobrowicz
  • Publication number: 20170107509
    Abstract: Methods for display of recombinant whole immunoglobulins or immunoglobulin libraries on the surface of eukaryote host cells, including yeast and filamentous fungi, are described. The methods are useful for screening libraries of recombinant immunoglobulins in eukaryote host cells to identify immunoglobulins that are specific for an antigen of interest.
    Type: Application
    Filed: January 27, 2016
    Publication date: April 20, 2017
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Bianka Prinz, Natarajan Sethuraman, Dongxing Zha, Stefan Wildt, Piotr Bobrowicz
  • Publication number: 20160077105
    Abstract: The present invention relates, inter alia, to polyspecificity reagents, methods of making the same, and methods of using the same in, inter alia, the selection, screening, enrichment, and identification of non-polyspecific, and thus developable, polypeptides.
    Type: Application
    Filed: April 29, 2014
    Publication date: March 17, 2016
    Inventors: Piotr Bobrowicz, Amber D. Hanna, Jerry M. Thomas
  • Patent number: 9260712
    Abstract: Methods for display of recombinant whole immunoglobulins or immunoglobulin libraries on the surface of eukaryote host cells, including yeast and filamentous fungi, are described. The methods are useful for screening libraries of recombinant immunoglobulins in eukaryote host cells to identify immunoglobulins that are specific for an antigen of interest.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: February 16, 2016
    Assignee: MERCK SHARP & DOHME CORP.
    Inventors: Bianka Prinz, Natarajan Sethuraman, Dongxing Zha, Stefan Wildt, Piotr Bobrowicz
  • Patent number: 9139632
    Abstract: Methods for producing proteins and glycoproteins in Pichia pastoris that lack detectable cross binding activity to antibodies made against host cell antigens are described. In particular, methods are described wherein recombinant Pichia pastoris strains that do not display a ?-mannosyltransferase 2 activity with respect to an N-glycan or O-glycan and do not display at least one activity selected from a ?-mannosyltransferase 1, 3, and 4 activity to produce recombinant proteins and glycoproteins. These recombinant Pichia pastoris strains can produce proteins and glycoproteins that lack detectable ?-mannosidase resistant ?-mannose residues thereon and thus, lack cross binding activity to antibodies against host cell antigens. Further described are methods for producing bi-sialylated human erythropoietin in Pichia pastoris that lack detectable cross binding activity to antibodies against host cell antigens.
    Type: Grant
    Filed: October 11, 2010
    Date of Patent: September 22, 2015
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Piotr Bobrowicz, Sujatha Gomathinayagam, Stephen Hamilton, Huijuan Li, Natarajan Sethuraman, Terrance A. Stadheim, Stefan Wildt
  • Publication number: 20150079633
    Abstract: The present invention relates to lower eukaryotic host cells having modified oligosaccharides which may be modified further by heterologous expression of a set of glycosyltransferases, sugar and sugar nucleotide transporters to become host-strains for the production of mammalian, e.g., human therapeutic glycoproteins. The process provides an engineered host cell which can be used to express and target any desirable gene(s) involved in glycosylation. Host cells with modified lipid-linked oligosaccharides are created or selected. N-glycans made in the engineered host cells exhibit GnTIV, GnTV, GnT VI or GnTIX activity, which produce multiantennary N-glycan structures and may be modified further by heterologous expression of one or more enzymes, e.g., glycosyltransferases, sugar, sugar nucleotide transporters, to yield human-like glycoproteins. For the production of therapeutic proteins, this method may be adapted to engineer cell lines in which any desired glycosylation structure may be obtained.
    Type: Application
    Filed: July 25, 2014
    Publication date: March 19, 2015
    Inventors: Piotr Bobrowicz, Stephen R. Hamilton, Tillman U. Gerngross, Stefan Wildt, Byung-Kwon Choi, Juergen Hermann Nett, Robert C. Davidson
  • Publication number: 20150051381
    Abstract: The present invention relates to eukaryotic host cells having modified oligosaccharides which may be modified further by heterologous expression of a set of glycosyltransferases, sugar transporters and mannosidases to become host-strains for the production of mammalian, e.g., human therapeutic glycoproteins. The invention provides nucleic acid molecules and combinatorial libraries which can be used to successfully target and express mammalian enzymatic activities such as those involved in glycosylation to intracellular compartments in a eukaryotic host cell. The process provides an engineered host cell which can be used to express and target any desirable gene(s) involved in glycosylation. Host cells with modified oligosaccharides are created or selected. N-glycans made in the engineered host cells have a Man5GlcNAc2 core structure which may then be modified further by heterologous expression of one or more enzymes, e.g.
    Type: Application
    Filed: August 7, 2014
    Publication date: February 19, 2015
    Inventors: Tillman U. Gerngross, Stefan Wildt, Byung-kwon Choi, Juergen Hermann Nett, Piotr Bobrowicz, Stephen R. Hamilton, Robert C. Davidson
  • Patent number: 8936918
    Abstract: Lower eukaryotic host cells have been recombinantly engineered to produce glycoprotein having human-like O-glycosylation. The glycoproteins are useful for the production of glycoprotein compositions with advantages for the production of human therapeutics.
    Type: Grant
    Filed: February 20, 2012
    Date of Patent: January 20, 2015
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Piotr Bobrowicz, William J. Cook, Stephen Hamilton, Juergen Nett, Terrance A. Stadheim, Stefan Wildt
  • Patent number: 8883483
    Abstract: The present invention relates to eukaryotic host cells having modified oligosaccharides which may be modified further by heterologous expression of a set of glycosyltransferases, sugar transporters and mannosidases to become host-strains for the production of mammalian, e.g., human therapeutic glycoproteins. The invention provides nucleic acid molecules and combinatorial libraries which can be used to successfully target and express mammalian enzymatic activities such as those involved in glycosylation to intracellular compartments in a eukaryotic host cell. The process provides an engineered host cell which can be used to express and target any desirable gene(s) involved in glycosylation. Host cells with modified oligosaccharides are created or selected. N-glycans made in the engineered host cells have a Man5GlcNAc2 core structure which may then be modified further by heterologous expression of one or more enzymes, e.g.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: November 11, 2014
    Assignee: GlycoFi, Inc.
    Inventors: Tillman U. Gerngross, Stefan Wildt, Byung-kwon Choi, Juergen Nett, Piotr Bobrowicz, Stephen Hamilton, Robert Davidson
  • Patent number: 8877462
    Abstract: The present invention relates to eukaryotic host cells having modified oligosaccharides which may be modified further by heterologous expression of a set of glycosyltransferases, sugar transporters and mannosidases to become host-strains for the production of mammalian, e.g., human therapeutic glycoproteins. The invention provides nucleic acid molecules and combinatorial libraries which can be used to successfully target and express mammalian enzymatic activities such as those involved in glycosylation to intracellular compartments in a eukaryotic host cell. The process provides an engineered host cell which can be used to express and target any desirable gene(s) involved in glycosylation. Host cells with modified oligosaccharides are created or selected. N-glycans made in the engineered host cells have a Man5GlcNAc2 core structure which may then be modified further by heterologous expression of one or more enzymes, e.g.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: November 4, 2014
    Assignee: GlycoFi, Inc.
    Inventors: Tillman U. Gerngross, Stefan Wildt, Byung-kwon Choi, Juergen Hermann Nett, Piotr Bobrowicz, Stephen R. Hamilton, Robert C. Davidson
  • Publication number: 20140323315
    Abstract: The present invention relates, inter alia, to polyspecificity reagents, methods of making the same, and methods of using the same in, inter alia, the selection, screening, enrichment, and identification of non-polyspecific, and thus developable, polypeptides.
    Type: Application
    Filed: April 29, 2014
    Publication date: October 30, 2014
    Applicant: Adimab, LLC
    Inventors: Piotr Bobrowicz, Amber D. Hanna, Jerry M. Thomas
  • Patent number: 8815544
    Abstract: The present invention provides a novel lower eukaryotic host cell producing human-like glycoproteins characterized as having a terminal ?-galactose residue and essentially lacking fucose and sialic acid residues. The present invention also provides a method for catalyzing the transfer of a galactose residue from UDP-galactose onto an acceptor substrate in a recombinant lower eukaryotic host cell, which can be used as a therapeutic glycoprotein.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: August 26, 2014
    Assignee: Glycofi, Inc.
    Inventors: Robert Davidson, Tillman Gerngross, Stefan Wildt, Byung-Kwon Choi, Juergen Hermann Nett, Piotr Bobrowicz, Stephen Robin Hamilton
  • Patent number: 8795984
    Abstract: A method is described for producing protein compositions having reduced amounts of O-linked glycosylation. The method includes producing the protein in cells cultured in the presence of an inhibitor of Pmt-mediated O-linked glycosylation and/or in the presence of one or more ?-1,2-mannosidases.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: August 5, 2014
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Piotr Bobrowicz, W. James Cook, Warren Kett