The catalog
Patent invalidity dossiers.
7,248 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.
Demand letter analyzer
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Paste the letter — we extract the asserted patents, identify the asserter, characterize their litigation history, flag validity vulnerabilities, and draft a sample response letter your attorney can review. Free, private, ~2-3 minutes.
Analyze a patent
Drop a US patent number — we’ll verify it on Google Patents and generate the full invalidity dossier.
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- US783192611 cases →6/8 sections
I'll search for the specific patent and any 2026 CAFC docket activity. Let me dig deeper into the 2026 PTAB activity and the claims. Let me verify whether there is any 2026 Federal Circuit activity specifically on the '926 patent, and…
View full analysis →added 9/24/2026 - US840471711 cases →6/8 sections
I'll run targeted searches for this specific patent number. Let me check the claim set and any recent 2026 litigation/appeal activity. Let me do a couple more targeted checks for any 2026 appellate activity and the PTAB outcome. Summary —…
View full analysis →added 10/1/2026 - US845798811 cases →6/8 sections
I'll search for this patent and check for any CAFC 2026 docket activity. US Patent 8,457,988 — Summary Important note on scope: I searched for the specific number 8,457,988. I found no CAFC 2026 docket activity tied to this patent. What I…
View full analysis →added 10/1/2026 - US854198311 cases →6/8 sections
I'll search for authoritative records on US 8541983, including USPTO/PTAB and any 2026 CAFC docket activity. Let me dig into litigation and PTAB activity specific to this patent and its family. Let me check for any Federal Circuit appeals…
View full analysis →added 9/30/2026 - US863446211 cases →6/8 sections
I'll verify the patent record and check for any current litigation activity before summarizing. US Patent 8,634,462 — Verification Summary I confirmed the record against the Google Patents full text for US8634462 and cross-checked with…
View full analysis →added 9/28/2026 - US952991811 cases →6/8 sections
Here's a concise summary of US Patent 9,529,918, based on the provided patent text and current search results: US Patent 9,529,918 Summary Title: System and methods thereof for downloading applications via a communication network Current…
View full analysis →added 5/10/2026 - US1167779810 cases →8/8 sections
Patent Summary: US 11,677,798 Title: Apparatus, system, and method for multi-bitrate content streaming Assignee: DISH Technologies L.L.C. Inventors: David F. Brueck, Mark B. Hurst, R. Drew Major Filing Date: October 7, 2022 Issue Date…
View full analysis →added 5/7/2026 - US1193808210 cases →8/8 sections
US Patent 11938082, titled "Massage device having variable stroke length," was issued on March 26, 2024. The original and a current assignee is Hyperice IP Subco LLC. The inventors are Philip C. Danby and John Charles Danby. The patent was…
View full analysis →added 6/15/2026 - US603213710 cases →8/8 sections
A concise summary of US Patent 6,032,137 is provided below. Title: Remote image capture with centralized processing and storage Assignee: The original assignee was CSP Holdings LLC. The patent has since been reassigned, with the current…
View full analysis →added 5/10/2026 - US849490410 cases →8/8 sections
Patent Analysis: US 8,494,904 Date of Analysis: April 26, 2026 Here is a concise summary of US Patent 8,494,904, including its key details and an overview of its independent claims. Title: Method and stored program for accumulating…
View full analysis →added 4/28/2026 - US1096551210 cases →6/8 sections
I'll search for authoritative information on this specific patent number, then synthesize. Let me check for Federal Circuit activity and the IPR outcomes specifically. Let me do one targeted check for any Federal Circuit (CAFC) 2026…
View full analysis →added 9/25/2026 - US553089010 cases →6/8 sections
I'll search for current information on this patent, including any recent litigation activity. Let me check for any recent (2026) litigation and verify the current legal status. US Patent 5,530,890 — "High Performance, Low Cost…
View full analysis →added 9/30/2026 - US576164810 cases →6/8 sections
I'll verify the patent details against live sources, including any litigation or appellate docket activity. Let me run a couple of targeted searches on the post-issuance history, since the first pass surfaced a reexamination certificate…
View full analysis →added 9/24/2026 - US650856310 cases →6/8 sections
I'll verify the patent details and check for any current litigation/docket activity. Let me check the litigation history and any recent (2025–2026) appellate activity. US Patent 6,508,563 B2 — Analyst Summary Source of record: Google…
View full analysis →added 9/28/2026 - US656197710 cases →6/8 sections
I'll verify the identifiers and look for docket/litigation info before summarizing. Let me pull the actual claim text for the '977 patent itself and check for any 2026 appellate activity. US Patent 6,561,977 — Analyst Summary Identifier…
View full analysis →added 10/1/2026 - US663689410 cases →6/8 sections
Patent Overview — US6636894B1 Title: "Systems and methods for redirecting users having transparent computer access to a network using a gateway device having redirection capability" Patent number / type: US6636894B1 (granted utility…
View full analysis →added 10/1/2026 - US671508410 cases →6/8 sections
I have the authoritative patent text in front of me. Let me verify current status, especially for any 2026 Federal Circuit activity, via search. Both searches returned no results. Let me try a few alternate queries to confirm. Let me check…
View full analysis →added 9/11/2026 - US672148910 cases →6/8 sections
I'll search for current information on this patent, then summarize. Let me get the specific claim language and check for any appellate activity. Summary — US 6,721,489 B1 ("Play list manager") Note on dates: your prompt states the current…
View full analysis →added 9/28/2026 - US672170510 cases →6/8 sections
I'll verify the bibliographic data and check the CAFC 2026 docket for this specific patent number. I have the key bibliographic and CAFC data. Let me confirm the 2026 appellate docket status specifically for this patent number. US Patent…
View full analysis →added 8/24/2026 - US717728510 cases →6/8 sections
I'll search for authoritative records on this patent and any CAFC 2026 docket activity. The CAFC 2026 search returned nothing. Let me run more targeted searches on dockets and current owner/appeals. Summary of U.S. Patent No. 7,177,285…
View full analysis →added 9/8/2026