{
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  "published_at": "2026-06-04T04:29:19Z",
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    "value": "Method and apparatus for modeling the modal properties of optical waveguides is marketed for licensing by Stanford University (OTL). It is documented in US patent US 7,505,881. The current assignee of record is Northrop Grumman Guidance and Electronics Co Inc. Google Patents reports its legal status as \u201cActive\u201d (an automated indicator, not a legal determination). Its expected expiration is 2026-09-23. Note: the patent's assignee of record is now Northrop Grumman Guidance and Electronics Co Inc, not Stanford University (OTL); it appears to have been assigned away, so licensing rights should be confirmed with the current owner.",
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