{
  "docket": "29058",
  "confidence": 0.95,
  "published_at": "2026-07-27T12:39:01Z",
  "summary": {
    "name": "summary",
    "value": "Space-time-state block coded MIMO communication system using reconfigurable antennas is marketed for licensing by University of California. It is documented in US patent US 8,638,872. The current assignee of record is Avago Technologies International Sales Pte Ltd. Google Patents reports its legal status as \u201cExpired - Fee Related\u201d (an automated indicator, not a legal determination). Its expected expiration is 2032-09-03.",
    "citation": {
      "source": "ipnex",
      "license": "ipnex_derived",
      "method": "templated_summary_from_publishable_facts",
      "confidence": 0.6,
      "url": null
    }
  },
  "patent_number": {
    "name": "patent_number",
    "value": "US8638872",
    "citation": {
      "source": "google_patents",
      "license": "google_patents_ccby4.0",
      "method": "gp_page_documents_number",
      "confidence": 0.95,
      "url": "https://patents.google.com/patent/US8638872/en"
    }
  },
  "patent_fields": [
    {
      "name": "title",
      "value": "Space-time-state block coded MIMO communication system using reconfigurable antennas",
      "citation": {
        "source": "google_patents",
        "license": "google_patents_ccby4.0",
        "method": "microdata_dc_title",
        "confidence": 0.9,
        "url": "https://patents.google.com/patent/US8638872/en"
      }
    },
    {
      "name": "current_owner",
      "value": "Avago Technologies International Sales Pte Ltd",
      "citation": {
        "source": "google_patents",
        "license": "google_patents_ccby4.0",
        "method": "microdata_assignee_current",
        "confidence": 0.8,
        "url": "https://patents.google.com/patent/US8638872/en"
      }
    },
    {
      "name": "original_assignee",
      "value": "University of California San Diego UCSD",
      "citation": {
        "source": "google_patents",
        "license": "google_patents_ccby4.0",
        "method": "microdata_assignee_original",
        "confidence": 0.85,
        "url": "https://patents.google.com/patent/US8638872/en"
      }
    },
    {
      "name": "legal_status",
      "value": "Expired - Fee Related",
      "citation": {
        "source": "google_patents",
        "license": "google_patents_ccby4.0",
        "method": "microdata_legal_status_gp_disclaims_accuracy",
        "confidence": 0.7,
        "url": "https://patents.google.com/patent/US8638872/en"
      }
    },
    {
      "name": "filing_date",
      "value": "2010-03-26",
      "citation": {
        "source": "google_patents",
        "license": "google_patents_ccby4.0",
        "method": "microdata_filing_date",
        "confidence": 0.9,
        "url": "https://patents.google.com/patent/US8638872/en"
      }
    },
    {
      "name": "priority_date",
      "value": "2009-03-27",
      "citation": {
        "source": "google_patents",
        "license": "google_patents_ccby4.0",
        "method": "microdata_priority_date",
        "confidence": 0.9,
        "url": "https://patents.google.com/patent/US8638872/en"
      }
    },
    {
      "name": "publication_date",
      "value": "2014-01-28",
      "citation": {
        "source": "google_patents",
        "license": "google_patents_ccby4.0",
        "method": "microdata_publication_date",
        "confidence": 0.9,
        "url": "https://patents.google.com/patent/US8638872/en"
      }
    },
    {
      "name": "expiration_date",
      "value": "2032-09-03",
      "citation": {
        "source": "google_patents",
        "license": "google_patents_ccby4.0",
        "method": "microdata_adjusted_expiration",
        "confidence": 0.75,
        "url": "https://patents.google.com/patent/US8638872/en"
      }
    }
  ],
  "ownership": {
    "signal": "assigned_away",
    "flags_discrepancy": true,
    "institution": "University of California",
    "current_owner": "Avago Technologies International Sales Pte Ltd",
    "original_assignee": "University of California San Diego UCSD"
  },
  "status": {
    "legal_status": "Expired - Fee Related",
    "category": "lapsed",
    "detail": "lapsed_fee",
    "in_force": false,
    "public_domain": false,
    "interpretation": "This patent appears to have lapsed for an unpaid maintenance fee rather than by reaching the end of its term; such a lapse can sometimes be revived, so confirm its current standing before relying on it."
  },
  "expiry": {
    "expiration_date": "2032-09-03",
    "basis": "adjusted",
    "as_of": "2026-07-30",
    "years_remaining": 6.1,
    "term": "active_term",
    "interpretation": null
  },
  "licensability": {
    "value": 3,
    "band": "weak",
    "complete": true,
    "summary": "3/100 -- weak licensability.",
    "components": [
      {
        "name": "Ownership",
        "state": "blocked",
        "detail": "The patent is now assigned away (Avago Technologies International Sales Pte Ltd), not the marketing institution, so it may not be theirs to license."
      },
      {
        "name": "Legal status",
        "state": "caution",
        "detail": "Not currently in force (Expired - Fee Related); it may be revivable, but the right is not live today."
      },
      {
        "name": "Remaining term",
        "state": "caution",
        "detail": "About 6 years of exclusive term remain (to 2032-09-03)."
      }
    ]
  },
  "link_out": {
    "institution": "University of California",
    "listing_url": "https://techtransfer.universityofcalifornia.edu/NCD/29058.html"
  }
}