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US

Peer-To-Peer Mobile Instant Messaging Method and Device

US 7,764,637 In force, term unresolved
OverviewFamilyAssignmentsSources & methods

Also listed on Pendragon Wireless LLC, an earlier holder on the record. The recorded assignments below show how it moved.

Term ends no later than Dec 24, 2026 · Medium confidence

In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.

Filed Sep 7, 2004 as application 10/935,342 · Granted Jul 27, 2010
Base term plus 993 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2004 2026
Clock starts
Apr 5, 2004
Ends no later than
Dec 24, 2026
Granted
Jul 27, 2010
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
993
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
3 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.
16
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 993 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. All three maintenance fees are recorded paid; no more fees are due. Confidence: Medium. 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 Apr 5, 2004, when application 10/817,994, the earliest non-provisional in its chain, was filed (this one was filed Sep 7, 2004)Apr 5, 2024High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+993 days, USPTO patent term adjustment recordDec 24, 2026High confidence
Terminal disclaimer capDisclaimer on file (approved), reference document not resolvedno cap applied, and none guessedMedium confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderno later than Dec 24, 2026Medium confidence

This family

US 7,961,663Term ended
Feb 2026
Feb 2026
US 7,764,637this patent
no later than Dec 2026
no later than Dec 2026
US 7,773,550Term ended
no later than Feb 2026
no later than Feb 2026
US 7,672,255Term ended
Nov 2026
Nov 2026
US 7,502,335Term ended
Mar 2025
Mar 2025
US 7,817,606In force
Dec 2027
Dec 2027
US 7,940,704Term ended
Apr 2024
Apr 2024
US 7,969,925Term ended
Apr 2024
Apr 2024
8 of 16 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
May 22, 2012
Reel 28247, frame 668
Lin, DanielPendragon Wireless LLCAssignment of Assignor's Interest
Feb 14, 2018
Reel 45338, frame 601
Pendragon Wireless LLCUniloc Luxembourg S.A.Assignment of Assignor's Interest
Jul 12, 2018
Reel 46532, frame 88
Uniloc Luxembourg S.A.Uniloc 2017 LLCAssignment 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