{
  "docket": "efficient-large-area-metasurface-topology-optimization",
  "confidence": 0.95,
  "published_at": "2026-06-04T04:29:19Z",
  "summary": {
    "name": "summary",
    "value": "High-efficiency, large-area, topology-optimized metasurfaces is marketed for licensing by Stanford University (OTL). It is documented in US patent US 11,841,518. The current assignee of record is Leland Stanford Junior University. Google Patents reports its legal status as \u201cActive\u201d (an automated indicator, not a legal determination). Its expected expiration is 2040-04-29.",
    "citation": {
      "source": "ipnex",
      "license": "ipnex_derived",
      "method": "templated_summary_from_publishable_facts",
      "confidence": 0.6,
      "url": null
    }
  },
  "patent_number": {
    "name": "patent_number",
    "value": "US11841518",
    "citation": {
      "source": "google_patents",
      "license": "google_patents_ccby4.0",
      "method": "gp_page_documents_number",
      "confidence": 0.95,
      "url": "https://patents.google.com/patent/US11841518/en"
    }
  },
  "patent_fields": [
    {
      "name": "title",
      "value": "High-efficiency, large-area, topology-optimized metasurfaces",
      "citation": {
        "source": "google_patents",
        "license": "google_patents_ccby4.0",
        "method": "microdata_dc_title",
        "confidence": 0.9,
        "url": "https://patents.google.com/patent/US11841518/en"
      }
    },
    {
      "name": "current_owner",
      "value": "Leland Stanford Junior University",
      "citation": {
        "source": "google_patents",
        "license": "google_patents_ccby4.0",
        "method": "microdata_assignee_current",
        "confidence": 0.8,
        "url": "https://patents.google.com/patent/US11841518/en"
      }
    },
    {
      "name": "original_assignee",
      "value": "Leland Stanford Junior University",
      "citation": {
        "source": "google_patents",
        "license": "google_patents_ccby4.0",
        "method": "microdata_assignee_original",
        "confidence": 0.85,
        "url": "https://patents.google.com/patent/US11841518/en"
      }
    },
    {
      "name": "legal_status",
      "value": "Active",
      "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/US11841518/en"
      }
    },
    {
      "name": "filing_date",
      "value": "2020-04-29",
      "citation": {
        "source": "google_patents",
        "license": "google_patents_ccby4.0",
        "method": "microdata_filing_date",
        "confidence": 0.9,
        "url": "https://patents.google.com/patent/US11841518/en"
      }
    },
    {
      "name": "priority_date",
      "value": "2019-04-29",
      "citation": {
        "source": "google_patents",
        "license": "google_patents_ccby4.0",
        "method": "microdata_priority_date",
        "confidence": 0.9,
        "url": "https://patents.google.com/patent/US11841518/en"
      }
    },
    {
      "name": "publication_date",
      "value": "2023-12-12",
      "citation": {
        "source": "google_patents",
        "license": "google_patents_ccby4.0",
        "method": "microdata_publication_date",
        "confidence": 0.9,
        "url": "https://patents.google.com/patent/US11841518/en"
      }
    },
    {
      "name": "expiration_date",
      "value": "2040-04-29",
      "citation": {
        "source": "google_patents",
        "license": "google_patents_ccby4.0",
        "method": "microdata_anticipated_expiration",
        "confidence": 0.75,
        "url": "https://patents.google.com/patent/US11841518/en"
      }
    }
  ],
  "ownership": {
    "signal": "institution_owned",
    "flags_discrepancy": false,
    "institution": "Stanford University (OTL)",
    "current_owner": "Leland Stanford Junior University",
    "original_assignee": "Leland Stanford Junior University"
  },
  "link_out": {
    "institution": "Stanford University (OTL)",
    "listing_url": "https://techfinder.stanford.edu/technology/efficient-large-area-metasurface-topology-optimization"
  }
}