Invalidity dossier

US 11633910

Resin solidification substrate and assembly

Current assignee: Global Filtration Systems Inc

Added 10/31/2026, 12:00:20 AM

At a glanceActive PTAB challengeNo litigation on file

Active provider: DeepSeek · deepseek-flash

Patent summary

Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.

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Patent Overview — US 11,633,910 B2

Title: Resin Solidification Substrate and Assembly

Patent number: US11633910B2 (application US17/074,813; published as US20210039309A1)

Inventor(s): Ali El-Siblani; Alexandr Shkolnik

Assignee of record: Global Filtration Systems Inc (original assignee); Sprintray Inc also listed as a current assignee in the source.

Key dates:

  • Priority date: 2009-10-19
  • Filing date: 2020-10-20
  • Publication of application: 2021-02-11 (US20210039309A1)
  • Grant/publication: 2023-04-25
  • Legal status: Active (adjusted expiration listed as 2031-07-20)

Purpose and plain-language scope (based only on title, abstract-level identifiers, and indexed text):
The supplied text presents this as a patent directed to a resin solidification substrate and assembly — that is, a component and associated assembly used in resin-based (likely additive-manufacturing/stereolithographic) solidification equipment. The indexed prior-art keywords — "film," "rigid," "solidification substrate," "frame," and "semi" — indicate the disclosure concerns a substrate (apparently a film or semi-rigid/rigid member) held in a frame, forming part of an assembly for resin solidification.

Because the claims, abstract, and detailed description were omitted from the supplied excerpt, the following are not established by this text and should not be assumed:

  • The specific structure recited in any claim (e.g., film thickness, frame geometry, semi-permeability, release-layer function).
  • Whether the substrate is flexible, semi-permeable, oxygen-transmissive, or otherwise characterized.
  • The particular machine or process (e.g., bottom-up vat photopolymerization) to which the assembly applies.
  • The full claim scope, claim count, or any dependent-claim limitations.
  • Any technical advantage, embodiment example, or figure content.

Likewise, the excerpt does not establish validity, enforceability, ownership beyond the listed assignees, or prior-art relationships; no such analysis is drawn here. Litigation and ownership-transfer data appearing in the source are outside the requested scope and are not addressed.

Source: https://patents.google.com/patent/US11633910/en

Generated 10/31/2026, 12:00:49 AM

Cases on file (0)

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Litigation summary

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Proceedings on file (1)

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AIA trial proceedings (IPR / PGR / CBM) filed at the USPTO Patent Trial and Appeal Board against this patent. Sourced from the USPTO Open Data Portal and refreshed every six hours; each proceeding number deep-links to the PTAB E2E docket.

1 active
Pending
Filed
Oct 30, 2026
Last modified
Oct 30, 2026
Petitioner
Shining 3D Tech Co., Ltd. et al.
Inventor
Ali El-Siblani et al

PTAB challenges

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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.

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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.

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