The catalog

Patent invalidity dossiers.

7,246 patents in the database, sorted by number of on-file litigation cases. Of these, 2,988 have at least one tracked case across 6,606 litigations.

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US220394
0 cases1/8 sections
Patent Overview — US 220394 Title: Improvement in Processes for Preparing Paint from Coke Inventor: Henry Lempfert, of Green Point, New York Patent number as printed in the specification: No. 220,391 (the source page lists the publication…
View full analysis →added 9/23/2026
US222441
0 cases1/8 sections
Patent Overview: US 222,441 Title: Improvement in Separable Buttons or Studs Inventor: Frank P. Barney, of Norton, County of Bristol, Massachusetts Patent Date: December 9, 1879 Application Filed: September 13, 1879 Publication Date…
View full analysis →added 9/23/2026
US2281802
0 cases1/8 sections
Patent Overview — US 2,281,802 A Title: Apparatus for straightening the edge of a dough sheet preparatory to coiling Assignee/Original Assignee: Baker Perkins Inc., Saginaw, Michigan (a New York corporation) Inventor: Albert O. Riordan…
View full analysis →added 9/23/2026
US228206
0 cases1/8 sections
Patent Overview: US 228,206 Title: "Pneumatic Grain-Conveyer" (Google Patents page header reads "luckenbice"; specification title reads "PNEUMATIC GRAIN-CONVEYER") Inventor: Frederic A. Luckenbach (spelled "LUGKENBACH" in the…
View full analysis →added 9/24/2026
US230378
0 cases1/8 sections
Patent Overview — US 230,378 Title: Grain-Toller Inventor: William J. Wilson, of Stephenville, Erath County, Texas Patent number: US 230,378 Application filed: April 27, 1880 (No model) Granted/Published: July 20, 1880 Legal status (as…
View full analysis →added 9/23/2026
US232139
0 cases1/8 sections
Patent Overview — US 232,139 Title: Vapor-Burner Inventor: James A. Marsh, of Cleveland, Ohio Filed: June 18, 1880 Granted/Published: September 14, 1880 Publication number: US232139A Assignee: None stated in the supplied text Status…
View full analysis →added 9/21/2026
US246987
0 cases1/8 sections
Patent Overview: US 246,987 Title: Subterranean System of Coast Defense Patentee: Theodore R. Timby, of Nyack, Rockland County, New York Patent Number: US 246,987 Application Filed: August 17, 1881 Granted/Published: September 13, 1881…
View full analysis →added 9/23/2026
US2475578
0 cases1/8 sections
Patent Overview — US 2,475,578 Title: Radio and visual warning device Patent number: US2475578A Inventor: William S. Halstead Original assignee / current assignee (as listed): Farnsworth Research Corp Application number: US576769A Filing /…
View full analysis →added 9/24/2026
US2482522
0 cases1/8 sections
Patent Overview: US 2,482,522 — "Voltage Regulating System" Bibliographic data (per supplied source): Inventor Lester G. Tubbs; original assignee Westinghouse Electric Corporation; application Serial No. 667,755, filed May 7, 1946; granted…
View full analysis →added 9/21/2026
US249095
0 cases1/8 sections
Patent Overview: US 249,095 — "Scaffold-Trestle" Title: Scaffold-Trestle Patent number: US249095A Inventors: Thomas S. Reyburn, of Kansas City, Missouri (Jackson County), and Jerome B. Sweetland, of Pontiac, Michigan (Oakland County)…
View full analysis →added 9/21/2026
US2512697
0 cases1/8 sections
Patent Overview — US 2512697 A Title: Method of making synthetic rubber carbon black compositions without mastication Patent number: US 2512697 A Application number: US 527929 A Inventor: Grotenhuis, Theodore A. Te Original assignee /…
View full analysis →added 9/20/2026
US252758
0 cases1/8 sections
US 252,758 — Hoof-Protector Title: Hoof-protector Patentee: John M. Goodman (spelled "JOHN MILES GOODMAN" in the claim signature; the specification reads "JOHN M. GOODMAN"), of Mill Creek, Huntingdon County, Pennsylvania Patent number: US…
View full analysis →added 9/23/2026
US253486
0 cases1/8 sections
Patent Overview: US 253,486 Title: Sewing-Machine Attachment Patentee: James F. Snediker, of Philadelphia, Pennsylvania Assignee: John O. Love, of the same place (as recorded on the specification) Patent Date: February 7, 1882 Application…
View full analysis →added 9/20/2026
US2589420
0 cases1/8 sections
Patent Overview — US 2589420A Title: Actuator for reciprocating well pumps Patent number: US 2589420A Application number: US746094A Inventors: Edgar W Mong; William O Anderson Original/current assignee: Individual Filing date / priority…
View full analysis →added 9/21/2026
US2600236
0 cases1/8 sections
Patent Overview: US 2600236 — "Muffler with a plurality of passages" Bibliographic data (from source): Inventor Stephen J. Gibel; original assignee/current assignee listed as Esther Larsen; application US60356A; filed and priority date…
View full analysis →added 9/24/2026
US265768
0 cases1/8 sections
Patent Overview — US 265,768 Title: Road-Cart Patentee: Jacob W. Diller, of Decatur, Illinois Patent number: US 265,768 Application filed: July 3, 1882 Granted/Published: October 10, 1882 Source…
View full analysis →added 9/23/2026
US2689346
0 cases1/8 sections
Patent Overview — US 2,689,346 Title: Long range navigation system Patent number: US 2,689,346 A Inventors: John A. Pierce, Donald E. Kerr, Jabez C. Street Original assignee / current assignee (as listed): US Department of Navy Application…
View full analysis →added 9/23/2026
US271996
0 cases1/8 sections
Patent Overview: US 271,996 Title and parties. The patent is a "Bedstead-Fastening" granted to Horace E. Swift of Providence, Rhode Island, assignor to himself and to Charles Benson and Stephen T. Willets of the same place (specification…
View full analysis →added 9/24/2026
US2819590
0 cases1/8 sections
Patent Overview — US 2819590 Title: Ventilated suit refrigeration unit Inventor: Frederick H. Green Assignee: Garrett Corp (original and current assignee per source) Application No.: US375743A Filing/Priority Date: 1953-08-21 Publication…
View full analysis →added 9/21/2026
US2868722
0 cases1/8 sections
US 2868722 — Concise Patent Overview Title: Method for producing a stabilized cracked distillate fuel oil Patent number: US2868722A (application US388385A) Original assignee: Socony Mobil Oil Co Inc. Current assignee listed in the source…
View full analysis →added 9/23/2026