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US

Apparatus and Methods for Generating Non-Interfering Electromagnetic Waves on an Insulated Transmission Medium

US 10,320,586 In force
OverviewFamilyAssignmentsSources & methods

Also listed on AT&T Corp., an earlier holder on the record. The recorded assignments below show how it moved.

Term ends Apr 16, 2036 · Low confidence

Filed Oct 14, 2016 as application 15/293,929 · Granted Jun 11, 2019
Base term plus 306 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
20 years from filing
2015 2036
Clock starts
Jul 14, 2015
Term ends
Apr 16, 2036
Granted
Jun 11, 2019
base term patent term adjustment fee events Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
306
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 10,341,142.
2 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
31
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.

This patent's term runs 306 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 2 of 3 maintenance fees are paid so far. Confidence: Low. from the record

How we calculated this date

One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Jul 14, 2015, when application 14/799,272, the earliest non-provisional in its chain, was filed (this one was filed Oct 14, 2016); a parent in its chain could not be resolved (the next row)Jul 14, 2035High confidence
Continuity chainA parent in the chain could not be resolveddated from this application's own claimMedium confidence
Patent term adjustment+306 days, USPTO patent term adjustment recordMay 15, 2036High confidence
Terminal disclaimer capDisclaimer resolved from the filed document (refs US 10,341,142)capped to Apr 16, 2036High confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events2 of 3 maintenance fees paidIn forceHigh confidence
Further caveats on recordThe record names parents not resolved: 15293819, 15293608, 15274987, 14965523Low confidence overallLow confidence
Computed term endThe steps above, in orderApr 16, 2036Low confidence

This family

US 9,628,116Lapsed on the fee record
Apr 2025
Apr 2025
US 9,722,318Lapsed on the fee record
Aug 2025
Aug 2025
US 10,033,107Lapsed on the fee record
Jul 2026
Jul 2026
US 9,929,755Lapsed on the fee record
Mar 2026
Mar 2026
Application PCT/US2016/041561PCT application
no patent term
no patent term
US 10,170,840In force
Oct 2035
Oct 2035
US 10,320,586this patent
Apr 2036
Apr 2036
US 10,341,142In force
Apr 2036
Apr 2036
8 of 31 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.

Assignments

Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
RecordedAssignorAssigneeConveyance
Nov 1, 2016
Reel 40184, frame 403
Henry, Paul Shala; Willis, Thomas M., III; Bennett, Robert; Barzegar, Farhad; Gerszberg, Irwin; Barnickel, Donald J.AT&T Intellectual Property I, L.P.Assignment of Assignor's Interest

Sources

Google Patents · The patent document at USPTO · Assignment records at USPTO

USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup

Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited