Patents by Inventor Michael James Flint
Michael James Flint 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).
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Patent number: 11952597Abstract: In one aspect, the invention relates to an immunogenic composition that includes a mutant Clostridium difficile toxin A and/or a mutant Clostridium difficile toxin B. The mutant toxin may include a glucosyltransferase domain having at least one mutation and a cysteine protease domain having at least one mutation, relative to the corresponding wild-type C. difficile toxin. The mutant toxins may include at least one amino acid that is chemically crosslinked. In another aspect, the invention relates to methods and compositions for use in culturing Clostridium difficile and in producing C. difficile toxins.Type: GrantFiled: July 7, 2020Date of Patent: April 9, 2024Assignee: Pfizer Inc.Inventors: Jason Arnold Lotvin, Annaliesa Sybil Anderson, Robert G. K. Donald, Michael James Flint, Narender Kumar Kalyan, Kathrin Ute Jansen, Maninder K. Sidhu, Justin Keith Moran, Mark Edward Ruppen, Weiqiang Sun
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Publication number: 20230391835Abstract: In one aspect, the invention relates to an immunogenic composition that includes a mutant Clostridium difficile toxin A and/or a mutant Clostridium difficile toxin B. Each mutant toxin includes a glucosyltransferase domain having at least one mutation and a cysteine protease domain having at least one mutation, relative to the corresponding wild-type C. difficile toxin. The mutant toxins may further include at least one amino acid that is chemically crosslinked. In another aspect, the invention relates to antibodies or binding fragments thereof that binds to said immunogenic compositions. In further aspects, the invention relates to isolated nucleotide sequences that encode any of the foregoing, and methods of use of any of the foregoing compositions.Type: ApplicationFiled: December 15, 2022Publication date: December 7, 2023Inventors: Kathrin Ute Jansen, Annaliesa Sybil Anderson, Robert G.K. Donald, Maninder K. Sidhu, Narender Kumar Kalyan, Justin Keith Moran, Mark Edward Ruppen, Michael James Flint
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Patent number: 11535652Abstract: In one aspect, the invention relates to an immunogenic composition that includes a mutant Clostridium difficile toxin A and/or a mutant Clostridium difficile toxin B. Each mutant toxin includes a glucosyltransferase domain having at least one mutation and a cysteine protease domain having at least one mutation, relative to the corresponding wild-type C. difficile toxin. The mutant toxins may further include at least one amino acid that is chemically crosslinked. In another aspect, the invention relates to antibodies or binding fragments thereof that binds to said immunogenic compositions. In further aspects, the invention relates to isolated nucleotide sequences that encode any of the foregoing, and methods of use of any of the foregoing compositions.Type: GrantFiled: December 5, 2019Date of Patent: December 27, 2022Assignee: Wyeth LLCInventors: Kathrin Ute Jansen, Annaliesa Sybil Anderson, Robert G. K. Donald, Maninder K. Sidhu, Narender Kumar Kalyan, Justin Keith Moran, Mark Edward Ruppen, Michael James Flint
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Patent number: 11208633Abstract: In one aspect, the invention relates to an immunogenic composition that includes a mutant Clostridium difficile toxin A and/or a mutant Clostridium difficile toxin B. The mutant toxin may include a glucosyltransferase domain having at least one mutation and a cysteine protease domain having at least one mutation, relative to the corresponding wild-type C. difficile toxin. The mutant toxins may include at least one amino acid that is chemically crosslinked. In another aspect, the invention relates to methods and compositions for use in culturing Clostridium difficile and in producing C. difficile toxins.Type: GrantFiled: December 5, 2019Date of Patent: December 28, 2021Assignee: Pfizer Inc.Inventors: Jason Arnold Lotvin, Annaliesa Sybil Anderson, Robert G. K. Donald, Michael James Flint, Narender Kumar Kalyan, Kathrin Ute Jansen, Maninder K. Sidhu, Justin Keith Moran, Mark Edward Ruppen, Weiqiang Sun
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Patent number: 10982198Abstract: In one aspect, the invention relates to an immunogenic composition that includes a mutant Clostridium difficile toxin A and/or a mutant Clostridium difficile toxin B. The mutant toxin may include a glucosyltransferase domain having at least one mutation and a cysteine protease domain having at least one mutation, relative to the corresponding wild-type C. difficile toxin. The mutant toxins may include at least one amino acid that is chemically crosslinked. In another aspect, the invention relates to methods and compositions for use in culturing Clostridium difficile and in producing C. difficile toxins.Type: GrantFiled: August 19, 2018Date of Patent: April 20, 2021Assignee: Pfizer Inc.Inventors: Jason Arnold Lotvin, Annaliesa Sybil Anderson, Robert G. K. Donald, Michael James Flint, Narender Kumar Kalyan, Kathrin Ute Jansen, Maninder K. Sidhu, Justin Keith Moran, Mark Edward Ruppen, Weiqiang Sun
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Publication number: 20210024903Abstract: In one aspect, the invention relates to an immunogenic composition that includes a mutant Clostridium difficile toxin A and/or a mutant Clostridium difficile toxin B. The mutant toxin may include a glucosyltransferase domain having at least one mutation and a cysteine protease domain having at least one mutation, relative to the corresponding wild-type C. difficile toxin. The mutant toxins may include at least one amino acid that is chemically crosslinked. In another aspect, the invention relates to methods and compositions for use in culturing Clostridium difficile and in producing C. difficile toxins.Type: ApplicationFiled: July 7, 2020Publication date: January 28, 2021Inventors: Jason Arnold Lotvin, Annaliesa Sybil Anderson, Robert G. K. Donald, Michael James Flint, Narender Kumar Kalyan, Kathrin Ute Jansen, Maninder K. Sidhu, Justin Keith Moran, Mark Edward Ruppen, Weiqiang Sun
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Patent number: 10787652Abstract: In one aspect, the invention relates to an immunogenic composition that includes a mutant Clostridium difficile toxin A and/or a mutant Clostridium difficile toxin B. The mutant toxin may include a glucosyltransferase domain having at least one mutation and a cysteine protease domain having at least one mutation, relative to the corresponding wild-type C. difficile toxin. The mutant toxins may include at least one amino acid that is chemically crosslinked. In another aspect, the invention relates to methods and compositions for use in culturing Clostridium difficile and in producing C. difficile toxins.Type: GrantFiled: October 7, 2013Date of Patent: September 29, 2020Assignee: Pfizer Inc.Inventors: Jason Arnold Lotvin, Annaliesa Sybil Anderson, Robert G. K. Donald, Michael James Flint, Narender Kumar Kalyan, Kathrin Ute Jansen, Maninder K. Sidhu, Justin Keith Moran, Mark Edward Ruppen, Weiqiang Sun
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Patent number: 10774117Abstract: In one aspect, the invention relates to an immunogenic composition that includes a mutant Clostridium difficile toxin A and/or a mutant Clostridium difficile toxin B. Each mutant toxin includes a glucosyltransferase domain having at least one mutation and a cysteine protease domain having at least one mutation, relative to the corresponding wild-type C. difficile toxin. The mutant toxins may further include at least one amino acid that is chemically crosslinked. In another aspect, the invention relates to antibodies or binding fragments thereof that binds to said immunogenic compositions. In further aspects, the invention relates to isolated nucleotide sequences that encode any of the foregoing, and methods of use of any of the foregoing compositions.Type: GrantFiled: July 12, 2017Date of Patent: September 15, 2020Assignee: Wyeth LLCInventors: Kathrin Ute Jansen, Annaliesa Sybil Anderson, Robert G. K. Donald, Maninder K. Sidhu, Narender K. Kalyan, Justin Keith Moran, Mark E. Ruppen, Michael James Flint
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Publication number: 20200254081Abstract: In one aspect, the invention relates to an immunogenic composition that includes a Clostridium difficile toxoid A and/or a C. difficile toxoid B, and methods of use thereof. In another aspect, the invention relates to a method for eliciting an immune response in a human against a C. difficile infection. The method includes administering to the human an effective dose of a composition, which includes a C. difficile toxoid, wherein the composition is administered at least two times, wherein the second administration is about 30 days after the first administration, and wherein the immune response against C. difficile toxin A and/or toxin B is sustained.Type: ApplicationFiled: September 14, 2018Publication date: August 13, 2020Inventors: Kathrin Ute Jansen, Annaliesa Sybil Anderson, Robert G.K. Donald, Michael James Flint, Nicholas Randolph Everard Kitchin, Justin Keith Moran, Louise Pedneault, Michael W. Pride, Mark Edward Ruppen, Christopher Frederick Webber
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Publication number: 20200165582Abstract: In one aspect, the invention relates to an immunogenic composition that includes a mutant Clostridium difficile toxin A and/or a mutant Clostridium difficile toxin B. The mutant toxin may include a glucosyltransferase domain having at least one mutation and a cysteine protease domain having at least one mutation, relative to the corresponding wild-type C. difficile toxin. The mutant toxins may include at least one amino acid that is chemically crosslinked. In another aspect, the invention relates to methods and compositions for use in culturing Clostridium difficile and in producing C. difficile toxins.Type: ApplicationFiled: December 5, 2019Publication date: May 28, 2020Inventors: Jason Arnold Lotvin, Annaliesa Sybil Anderson, Robert G.K. Donald, Michael James Flint, Narender Kumar Kalyan, Kathrin Ute Jansen, Maninder K. Sidhu, Justin Keith Moran, Mark Edward Ruppen, Weiqiang Sun
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Publication number: 20200095290Abstract: In one aspect, the invention relates to an immunogenic composition that includes a mutant Clostridium difficile toxin A and/or a mutant Clostridium difficile toxin B. Each mutant toxin includes a glucosyltransferase domain having at least one mutation and a cysteine protease domain having at least one mutation, relative to the corresponding wild-type C. difficile toxin. The mutant toxins may further include at least one amino acid that is chemically crosslinked. In another aspect, the invention relates to antibodies or binding fragments thereof that binds to said immunogenic compositions. In further aspects, the invention relates to isolated nucleotide sequences that encode any of the foregoing, and methods of use of any of the foregoing compositions.Type: ApplicationFiled: December 5, 2019Publication date: March 26, 2020Inventors: Kathrin Ute Jansen, Annaliesa Sybil Anderson, Robert G.K. Donald, Maninder K. Sidhu, Narender Kumar Kalyan, Justin Keith Moran, Mark Edward Ruppen, Michael James Flint
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Patent number: 10597428Abstract: In one aspect, the invention relates to an immunogenic composition that includes a mutant Clostridium difficile toxin A and/or a mutant Clostridium difficile toxin B. Each mutant toxin includes a glucosyltransferase domain having at least one mutation and a cysteine protease domain having at least one mutation, relative to the corresponding wild-type C. difficile toxin. The mutant toxins may further include at least one amino acid that is chemically crosslinked. In another aspect, the invention relates to antibodies or binding fragments thereof that binds to said immunogenic compositions. In further aspects, the invention relates to isolated nucleotide sequences that encode any of the foregoing, and methods of use of any of the foregoing compositions.Type: GrantFiled: March 20, 2019Date of Patent: March 24, 2020Assignee: Wyeth LLCInventors: Kathrin Ute Jansen, Annaliesa Sybil Anderson, Robert G. K. Donald, Maninder K. Sidhu, Narender Kumar Kalyan, Justin Keith Moran, Mark Edward Ruppen, Michael James Flint
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Publication number: 20190202873Abstract: In one aspect, the invention relates to an immunogenic composition that includes a mutant Clostridium difficile toxin A and/or a mutant Clostridium difficile toxin B. Each mutant toxin includes a glucosyltransferase domain having at least one mutation and a cysteine protease domain having at least one mutation, relative to the corresponding wild-type C. difficile toxin. The mutant toxins may further include at least one amino acid that is chemically crosslinked. In another aspect, the invention relates to antibodies or binding fragments thereof that binds to said immunogenic compositions. In further aspects, the invention relates to isolated nucleotide sequences that encode any of the foregoing, and methods of use of any of the foregoing compositions.Type: ApplicationFiled: March 20, 2019Publication date: July 4, 2019Inventors: Kathrin Ute Jansen, Annaliesa Sybil Anderson, Robert G.K. Donald, Maninder K. Sidhu, Narender Kumar Kalyan, Justin Keith Moran, Mark Edward Ruppen, Michael James Flint
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Publication number: 20190112584Abstract: In one aspect, the invention relates to an immunogenic composition that includes a mutant Clostridium difficile toxin A and/or a mutant Clostridium difficile toxin B. The mutant toxin may include a glucosyltransferase domain having at least one mutation and a cysteine protease domain having at least one mutation, relative to the corresponding wild-type C. difficile toxin. The mutant toxins may include at least one amino acid that is chemically crosslinked. In another aspect, the invention relates to methods and compositions for use in culturing Clostridium difficile and in producing C. difficile toxins.Type: ApplicationFiled: August 19, 2018Publication date: April 18, 2019Inventors: Jason Arnold Lotvin, Annaliesa Sybil Anderson, Robert G. K. Donald, Michael James Flint, Narender Kumar Kalyan, Kathrin Ute Jansen, Maninder K. Sidhu, Justin Keith Moran, Mark Edward Ruppen, Weiqiang Sun
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Publication number: 20170313749Abstract: In one aspect, the invention relates to an immunogenic composition that includes a mutant Clostridium difficile toxin A and/or a mutant Clostridium difficile toxin B. Each mutant toxin includes a glucosyltransferase domain having at least one mutation and a cysteine protease domain having at least one mutation, relative to the corresponding wild-type C. difficile toxin. The mutant toxins may further include at least one amino acid that is chemically crosslinked. In another aspect, the invention relates to antibodies or binding fragments thereof that binds to said immunogenic compositions. In further aspects, the invention relates to isolated nucleotide sequences that encode any of the foregoing, and methods of use of any of the foregoing compositions.Type: ApplicationFiled: July 12, 2017Publication date: November 2, 2017Inventors: Kathrin Ute Jansen, Annaliesa Sybil Anderson, Robert G.K. Donald, Maninder K. Sidhu, Narender K. Kaylan, Justin Keith Moran, Mark E. Ruppen, Michael James Flint
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Patent number: 9745354Abstract: In one aspect, the invention relates to an immunogenic composition that includes a mutant Clostridium difficile toxin A and/or a mutant Clostridium difficile toxin B. Each mutant toxin includes a glucosyltransferase domain having at least one mutation and a cysteine protease domain having at least one mutation, relative to the corresponding wild-type C. difficile toxin. The mutant toxins may further include at least one amino acid that is chemically crosslinked. In another aspect, the invention relates to antibodies or binding fragments thereof that binds to said immunogenic compositions. In further aspects, the invention relates to isolated nucleotide sequences that encode any of the foregoing, and methods of use of any of the foregoing compositions.Type: GrantFiled: October 31, 2014Date of Patent: August 29, 2017Assignee: Wyeth LLCInventors: Mark E. Ruppen, Justin Keith Moran, Kathrin Ute Jansen, Annaliesa Sybil Anderson, Robert G. K. Donald, Narender K. Kalyan, Maninder K. Sidhu, Michael James Flint
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Patent number: RE46376Abstract: In one aspect, the invention relates to an immunogenic composition that includes a mutant Clostridium difficile toxin A and/or a mutant Clostridium difficile toxin B. Each mutant toxin includes a glucosyltransferase domain having at least one mutation and a cysteine protease domain having at least one mutation, relative to the corresponding wild-type C. difficile toxin. The mutant toxins may further include at least one amino acid that is chemically crosslinked. In another aspect, the invention relates to antibodies or binding fragments thereof that binds to said immunogenic compositions. In further aspects, the invention relates to isolated nucleotide sequences that encode any of the foregoing, and methods of use of any of the foregoing compositions.Type: GrantFiled: October 14, 2015Date of Patent: April 25, 2017Assignee: Wyeth LLCInventors: Annaliesa Sybil Anderson, Robert G. K. Donald, Kathrin Ute Jansen, Michael James Flint
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Patent number: RE46518Abstract: In one aspect, the invention relates to an immunogenic composition that includes a mutant Clostridium difficile toxin A and/or a mutant Clostridium difficile toxin B. Each mutant toxin includes a glucosyltransferase domain having at least one mutation and a cysteine protease domain having at least one mutation, relative to the corresponding wild-type C. difficile toxin. The mutant toxins may further include at least one amino acid that is chemically crosslinked. In another aspect, the invention relates to antibodies or binding fragments thereof that binds to said immunogenic compositions. In further aspects, the invention relates to isolated nucleotide sequences that encode any of the foregoing, and methods of use of any of the foregoing compositions.Type: GrantFiled: December 1, 2016Date of Patent: August 22, 2017Assignee: Wyeth LLCInventors: Annaliesa Sybil Anderson, Maninder K. Sidhu, Robert G. K. Donald, Kathrin Ute Jansen, Narender Kumar Kalyan, Justin Keith Moran, Mark Edward Ruppen, Michael James Flint
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Patent number: RE48862Abstract: In one aspect, the invention relates to an immunogenic composition that includes a mutant Clostridium difficile toxin A and/or a mutant Clostridium difficile toxin B. Each mutant toxin includes a glucosyltransferase domain having at least one mutation and a cysteine protease domain having at least one mutation, relative to the corresponding wild-type C. difficile toxin. The mutant toxins may further include at least one amino acid that is chemically crosslinked. In another aspect, the invention relates to antibodies or binding fragments thereof that binds to said immunogenic compositions. In further aspects, the invention relates to isolated nucleotide sequences that encode any of the foregoing, and methods of use of any of the foregoing compositions.Type: GrantFiled: April 18, 2019Date of Patent: December 28, 2021Assignee: Wyeth LLCInventors: Maninder K. Sidhu, Annaliesa Sybil Anderson, Robert G. K. Donald, Kathrin Ute Jansen, Narender K. Kalyan, Justin Keith Moran, Mark E. Ruppen, Michael James Flint
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Patent number: RE48863Abstract: In one aspect, the invention relates to an immunogenic composition that includes a mutant Clostridium difficile toxin A and/or a mutant Clostridium difficile toxin B. Each mutant toxin includes a glucosyltransferase domain having at least one mutation and a cysteine protease domain having at least one mutation, relative to the corresponding wild-type C. difficile toxin. The mutant toxins may further include at least one amino acid that is chemically crosslinked. In another aspect, the invention relates to antibodies or binding fragments thereof that binds to said immunogenic compositions. In further aspects, the invention relates to isolated nucleotide sequences that encode any of the foregoing, and methods of use of any of the foregoing compositions.Type: GrantFiled: April 18, 2019Date of Patent: December 28, 2021Assignee: Wyeth LLCInventors: Annaliesa Sybil Anderson, Maninder K. Sidhu, Robert G. K. Donald, Kathrin Ute Jansen, Narender K. Kalyan, Justin Keith Moran, Mark E. Ruppen, Michael James Flint