{"releaseId":"sha256:ac5dd8d905c00eace5353304a9456358eede4224f3a935465432ab184b4d049a","startup":{"record_contract":"stompstart.startup/v1","startup_id":"stp_9a4e1cdd9cd8d12d063b4e977e","subject_id":"sub_15fc20d092e3b4820fac1b91f0","slug":"ip-nexus","stewardship":"editorial","directory":{"state":"unlisted"},"name":"IP Nexus","tagline":"LinkedIn for innovation and IP","description":"The listing, of which only a directory excerpt survives, described IP Nexus as a service connecting startups, inventors, entrepreneurs, universities and other IP owners with experts who could help them build businesses and protect and monetize their intellectual property.","highlights":[],"website":{"state":"unknown"},"access":[],"platforms":[],"surfaces":[],"classification":{"categories":["startup-resources","legal"],"stage":"unknown"},"pricing":{"model":"unknown"},"company":{"state":"unknown"},"people":{"state":"unknown"},"location":{"kind":"unknown"},"founded":{"precision":"unknown"},"media":{"gallery":[]},"links":[],"status":{"label":"unverified","basis":{"kind":"none"},"checked_on":"2026-09-28","confidence":"low","hook":"A Hong Kong network that pitched itself as LinkedIn for intellectual property, pairing inventors and startups with patent lawyers and a patent marketplace.","summary":"GreyB reports IP Nexus was founded in April 2012 by Hidero Niioka and ran an IP Exchange marketplace listing more than 67,000 patents. In December 2023 an event programme still described Niioka as IP Nexus CEO and founder, but ipnexus.com could not be opened because of a certificate error, so its current state is unknown.","unknown_reason":"The founder still called himself IP Nexus CEO in December 2023, but ipnexus.com cannot be read because of a certificate error and no 2025 or 2026 activity was found."},"citations":[{"url":"https://alternativeto.net/software/ip-nexus/about","title":"alternativeto.net","kind":"other","retrieved_at":"2026-09-28T00:00:00Z"},{"url":"https://greyb.com/blog/marketplaces-buy-sell-patents/","title":"greyb.com","kind":"other","retrieved_at":"2026-09-28T00:00:00Z","capture_attempt_digest":"sha256:de5d6ff1f771f9543f3be06b4a1d942b32fb6f35639c18afdb61aa95b1da99f6"},{"url":"https://www.dwih-tokyo.org/en/event/taking-innovation-abroad/","title":"dwih-tokyo.org","kind":"other","retrieved_at":"2026-09-28T00:00:00Z","capture_attempt_digest":"sha256:1c85484b49ce147d35b40d1606043260f96bdc6fd063bb74ea58bf3814f889e9"},{"url":"https://www.ipnexus.com/","title":"ipnexus.com","kind":"first_party","retrieved_at":"2026-09-28T00:00:00Z"},{"url":"https://secure.ipnexus.com/en/","title":"secure.ipnexus.com","kind":"other","retrieved_at":"2026-09-28T00:00:00Z"}],"corrections":[],"revision_digest":"sha256:f88d328db422c8c90982026dfb7cc1ef3ea774a42719d54335ee28d986b26fb9"},"basis":null,"events":[{"record_contract":"stompstart.event/v1","event_id":"evt_aa20ab7fef47125a361d635334","startup_id":"stp_9a4e1cdd9cd8d12d063b4e977e","kind":"other","subject":"company","title":"On record","summary":"A DWIH Tokyo event programme for 4 to 5 December 2023 described Hidero Niioka as 'CEO & Founder @ IPNexus' and a specially appointed associate professor at Tohoku University.","occurred_on":{"precision":"day","value":"2023-12-04"},"date_basis":"announced","citations":[{"url":"https://www.dwih-tokyo.org/en/event/taking-innovation-abroad/","title":"dwih-tokyo.org","kind":"other","retrieved_at":"2026-09-28T00:00:00Z","capture_attempt_digest":"sha256:1c85484b49ce147d35b40d1606043260f96bdc6fd063bb74ea58bf3814f889e9"}],"status":{"state":"active"},"corrections":[],"revision_digest":"sha256:42409008bb14ddc8cbd5582a61eb8f0d3a22ed48cc73855f56c51ca17e92921c"},{"record_contract":"stompstart.event/v1","event_id":"evt_6d303bc359c6596b5cfc15cee9","startup_id":"stp_9a4e1cdd9cd8d12d063b4e977e","kind":"other","subject":"company","title":"On record","summary":"GreyB reports IP Nexus was established in April 2012, with Hidero Niioka as founder and CEO; its IP Exchange marketplace listed more than 67,000 patents, about a third from the Japan Patent Office.","occurred_on":{"precision":"month","value":"2012-04"},"date_basis":"announced","citations":[{"url":"https://greyb.com/blog/marketplaces-buy-sell-patents/","title":"greyb.com","kind":"other","retrieved_at":"2026-09-28T00:00:00Z","capture_attempt_digest":"sha256:de5d6ff1f771f9543f3be06b4a1d942b32fb6f35639c18afdb61aa95b1da99f6"}],"status":{"state":"active"},"corrections":[],"revision_digest":"sha256:45d3a2c082fbede1daa938fb0eee8f3c3031d716ed4928f772ed6be2e9ae186e"}],"nextEventCursor":null,"siteChecks":[],"listings":[{"listing":{"record_contract":"stompstart.listing/v1","listing_id":"lst_0cceabc1948febbb705883d329","startup_id":"stp_9a4e1cdd9cd8d12d063b4e977e","original_url":"http://stompstart.com/ip-nexus","legacy_paths":["/ip-nexus"],"listed_on":{"precision":"unknown"},"editorial_summary":"The listing, of which only a directory excerpt survives, described IP Nexus as a service connecting startups, inventors, entrepreneurs, universities and other IP owners with experts who could help them build businesses and protect and monetize their intellectual property.","media":[],"citations":[],"corrections":[],"revision_digest":"sha256:5702c9995fee99cc721f2285069a95076d5dc01c54a2617a38421bff00b1ee9a"},"observations":[{"record_contract":"stompstart.observation/v1","observation_id":"obs_f80c7538c793508705a3c03d48","capture_attempt_digest":"sha256:798406d8ab64f5c439bf92afa12670fb34a41b5e17b71653dbe9c54b08c2e2eb","observed_at":"2019-07-22T16:07:37Z","checked_at":"2026-09-29T12:01:54.938Z","corrections":[],"kind":"archive_listing","listing_id":"lst_0cceabc1948febbb705883d329","page_kind":"directory_card","extractor":{"name":"stompstart-archive-extractor","version":"1+b094880b3b02556f"},"original_listing_url":"http://stompstart.com/ip-nexus","page_url":"https://stompstart.com/startups/located/Central","listed_on":{"precision":"unknown"},"page":{"name":"IP Nexus","pitch":"LinkedIn for innovation and IP","description":"IP Nexus connects startups, inventors, entrepreneurs, universities and other intellectual property (IP) owners with experts who can help them build successful businesses and protect and monetize their IP. 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