Invalidity dossier
US 8637126
Biodegradable paper-based laminate with oxygen and moisture barrier properties and method for making biodegradable paper-based laminate
Current assignee: Graphic Packaging International LLC
Added 9/24/2026, 12:04:34 AM
Active provider: DeepSeek · deepseek-flash
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
US8637126B2 — Concise Patent Overview
Title: Biodegradable paper-based laminate with oxygen and moisture barrier properties and method for making biodegradable paper-based laminate
Patent number: US8637126B2
Application number: US11/348,150
Inventors: Christopher S. Cleveland; Tricia S. Reighard; James I. Marchman
Original assignee: International Paper Co
Current assignee (per listing): Graphic Packaging International LLC; Graphic Packaging International Partners LLC
Priority/filing date: 2006-02-06
Publication date (grant): 2014-01-28
Legal status (as listed): Active, adjusted expiration 2028-09-13
Purpose (plain language): The patent concerns a paper-based laminate intended to provide both oxygen-barrier and moisture-barrier properties while remaining biodegradable. The classification data reinforce this: B32B29/00, B32B27/10, B32B27/30, B32B27/306 (vinyl acetate/vinyl alcohol copolymers), B32B27/32 (polyolefins), B32B27/36 (polyesters), B65D65/46 (disintegrable, dissolvable or edible packaging materials), plus tags for "Biodegradable," "Oxygen barrier," and "Water vapor barrier," and end uses such as food packaging and boxes/cartons.
Scope indicators from the excerpt: The listed prior-art keywords — weight, moisture, "protectant layer," product according, percent — suggest claims expressed in terms of layer composition and weight percentages. The layered structure classes point to a paper or cardboard layer combined with synthetic-resin layers. The title also recites a "method for making" the laminate, so both product and method subject matter appear to be covered.
Family: Related filings are listed for TW, KR, EP, CA, PCT/WO, AU, JP, CN, and BR, with US20070184220A1 as the pre-grant publication.
Source: https://patents.google.com/patent/[US8637126](/patent/US8637126)/en
What the excerpt does not establish: It contains no claim language, no written description, no examples, no measured barrier values, and no identified prior-art references. Therefore the specific compositional limits, layer order or thicknesses, biodegradability standard, claimed percentages, and the actual method steps cannot be stated from the supplied text. Also not established here: why the application was allowed, or any comparison against cited art. (Per instructions, no litigation, assignment-chain analysis, validity, or prior-art research was performed.)
Generated 10/1/2026, 9:32:06 PM
Cases on file (0)
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Litigation summary
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Proceedings on file (0)
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No PTAB proceedings on file. This patent has not been challenged via IPR, PGR, or CBM. The absence is itself a signal — well-asserted patents eventually attract IPRs. The LLM analysis below may surface filings the ODP feed hasn’t indexed yet.
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
Earlier patents, publications, and products that may anticipate or render the claims unpatentable.
Obviousness
Combinations of prior art that suggest the claimed invention would have been obvious under 35 U.S.C. § 103.
Extensions
Patent term adjustments, term extensions, continuations, divisionals, family members, and expiration dates.
Derivative works
Defensive disclosure: derivative variations of each claim designed to render future incremental improvements obvious or non-novel.