Invalidity dossier
US 10125287
Pigment complexes for water borne coating compositions
Current assignee: Sherwin Williams Co
Added 9/23/2026, 9:00:02 PM
Active provider: DeepSeek · deepseek-flash
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US 10,125,287 B2
Title: Pigment complexes for water borne coating compositions
Patent number: US10125287B2
Assignee: The Sherwin-Williams Company (original assignee; recorded assignments list inventors Wanda J. Smith and Revathi R. Tomko, and later Kimberly A. Koglin)
Inventors: Revathi R. Tomko, Wanda J. Smith, Kimberly A. Koglin
Key dates: Priority date 2016-06-30; filing date 2016-08-31; publication of US20180002557A1 on 2018-01-04; granted 2018-11-13; status listed as Active, with adjusted expiration 2036-10-04.
Purpose and plain-language scope (per the supplied excerpt): The patent relates to pigment complexes intended for water borne coating compositions—i.e., paint-type coatings formulated with water rather than solvent. The classification data indicate coating compositions based on vinyl acetate and other vinyl ester polymers, acrylate/acrylic-acid ester copolymers (including esters with additional halogen, nitrogen, sulfur or oxygen atoms), and phosphorus-containing monomers, combined with inorganic compounding ingredients such as metal oxides, hydroxides, and silica, and with treatment of inorganic pigments/fillers (C09C3/00). A chemical structure indexed in the description corresponds to a phosphate-functional (meth)acrylate monomer, i.e., *C(=C)C(=O)OCOP(=O)(O)O. Together these indicators suggest binder systems and pigment treatment chemistry directed at aqueous coatings. No example text, claims, or detailed description were included in the excerpt, so the precise formulation, ratios, method steps, and claim coverage cannot be stated from the supplied material.
What the excerpt does not establish: It contains no claims, no written description, no examples or data, and no named prior-art references, so the actual claimed scope, comparative performance, and distinguishing features are not established here. Bibliographic entries such as "Family has litigation," current assignee accuracy, and legal-status/expiration fields are expressly presented in the source as assumptions or third-party data, not legal conclusions; nothing about litigation, ownership transfers, validity, or prior art is assessed in this overview.
Generated 10/1/2026, 9:41:02 PM
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Litigation summary
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Proceedings on file (0)
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PTAB challenges
AIA trial proceedings at the USPTO Patent Trial and Appeal Board — IPR, PGR, and CBM. Petitioners, judge panels, claim-level invalidation outcomes from Final Written Decisions, and Federal Circuit appeals. The single most important defensive datapoint after litigation history.
Assignment history
Inventors, original assignee, and the chain of ownership recorded with the USPTO — including the correspondent attorney who recorded each assignment, since shell-LLC chains often share one repeat-player attorney even when the entity names look unrelated. Surfaces NPE / patent-troll patterns: shell-entity transfers, known asserters in the chain, repeat correspondent fingerprints, pre-litigation assignments, and bankruptcy fire-sales.
Prior art
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Obviousness
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Extensions
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Derivative works
Defensive disclosure: derivative variations of each claim designed to render future incremental improvements obvious or non-novel.