The catalog
Patent invalidity dossiers.
7,218 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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Drop a US patent number — we’ll verify it on Google Patents and generate the full invalidity dossier.
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I'll verify the patent number and check for any litigation/docket activity before summarizing. Verification note I searched and confirmed the identifier US 4,674,041 / US4674041A (Appl. No. 06/533,060) and did not substitute any similar…
View full analysis →added 10/1/2026I'll research this patent across USPTO/Google Patents records, litigation databases, and any 2026 CAFC dockets. I have the full claim text. Now let me check for litigation and any 2026 CAFC docket activity. Let me check the specific…
View full analysis →added 9/27/2026I'll search for current status information on this specific patent number. Let me verify the litigation and reexamination details more specifically. US 5,030,971 — Summary Note on scope of my search: I searched for the exact identifier…
View full analysis →added 9/29/2026I'll search for this specific patent number across USPTO sources and any 2026 litigation dockets. Let me run additional targeted searches for litigation and docket records. Let me do one final check for any 2026 Federal Circuit activity…
View full analysis →added 9/24/2026I'll search for authoritative information on this specific patent number, including any current litigation activity. Let me dig deeper on the litigation history and any recent (2025–2026) activity. Let me check for any recent activity and…
View full analysis →added 9/30/2026I'll verify current litigation and USPTO records for this specific patent number before summarizing. The initial searches returned no relevant records. Let me try more targeted queries. Let me try to retrieve the actual claim language…
View full analysis →added 9/28/2026I'll search for authoritative information on US patent 5424780, including any 2026 CAFC litigation activity. Let me search specifically for litigation and docket activity involving this patent. Let me check for appeal/docket history and…
View full analysis →added 9/26/2026I'll search for information on US patent 5445934 from authoritative sources, including USPTO and CAFC dockets. I have good initial data. Let me now search for the full claims text from the USPTO/patent databases and check for any CAFC…
View full analysis →added 9/8/2026I'll search for authoritative information on this patent, including any 2026 CAFC docket activity. Let me dig deeper into the IPR reference and any 2026 litigation activity. Let me verify the patent's legal status and check specifically…
View full analysis →added 9/24/2026I'll check for any litigation/docket activity for this specific patent, then summarize from the authoritative full text provided. US 5,521,366 — Analyst Summary Important note on scope of verification: The full patent text was supplied to…
View full analysis →added 9/24/2026I'll search for the specific patent number and any related CAFC 2026 docket activity. Let me run more targeted searches for the patent and any 2026 Federal Circuit activity. Let me check specifically for any 2026 activity involving this…
View full analysis →added 9/27/2026I'll search for the specific patent number and any related litigation. Let me get the abstract, claim text, and any litigation involving this patent. Let me try to retrieve the abstract and explicit claim text, plus check for any court…
View full analysis →added 9/28/2026I'll verify the patent's current status and check for any 2026 CAFC activity before summarizing. Let me check for any 2026 activity and confirm the current record status. US Patent 5,670,730 — Summary Search scope note (per task): I…
View full analysis →added 9/27/2026I'll search for authoritative information on this specific patent number, including any current litigation. Let me verify the full claim set and check for any current (2026) litigation activity. US Patent 5,683,243 — Summary Source of…
View full analysis →added 9/29/2026I'll search for authoritative records on this specific patent number across USPTO and the Federal Circuit's 2026 docket. Important: the top Federal Circuit 2026 hits concern a different patent number (7,679,637). Let me search specifically…
View full analysis →added 9/8/2026I'll search for this specific patent number across the requested sources. Let me check for litigation/docket records and the claim set specifically. Summary of US Patent 5,716,785 I searched for this exact number across patent databases…
View full analysis →added 9/10/2026I'll search for authoritative information on US 5795716, including the USPTO record and any CAFC/litigation activity. Let me check the claims in full, and look for litigation/CAFC activity. US Patent 5,795,716 — Analyst Summary Note on…
View full analysis →added 9/10/2026I'll run targeted searches for this exact patent number and check for any 2026 CAFC activity. I have core bibliographic data. Let me verify claim structure, litigation/reexamination history, and check for any 2026 appellate activity…
View full analysis →added 9/8/2026US Patent 5819222, titled "Task-constrained connected speech recognition of propagation of tokens only if valid propagation path is present," was assigned to British Telecommunications PLC. The inventors are Samuel Gavin Smyth and Simon…
View full analysis →added 7/22/2026I'll search for authoritative information on this patent number, then summarize. US 5,867,819 — "Audio decoder" Search scope note: I searched for this exact number (5,867,819) across patent databases and litigation records. I found no 2026…
View full analysis →added 9/28/2026