- Filed
- Oct 30, 2026
- Last modified
- Oct 30, 2026
- Petitioner
- Shining 3D Tech Co., Ltd. et al.
- Inventor
- Ali El-Siblani et al
Invalidity dossier
US 11633910
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.
✓ Generated
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.
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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1 active
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
Combinations of prior art that suggest the claimed invention would have been obvious under 35 U.S.C. § 103.
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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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