The Patent Finder
US

Method and Apparatus for Performing Link Defragmentation Subject to an Interface Rate Constraint

US 7,397,815 In force
OverviewAssignmentsSources & methods
Collateral for a security interest recorded May 20, 2019 (BP Funding Trust, Series SPL-VI).

Term ends Nov 17, 2026 · High confidence

Filed Jan 27, 2005 as application 11/044,974 · Granted Jul 8, 2008
Base term plus 659 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2005 2026
Clock starts
Jan 27, 2005
Term ends
Nov 17, 2026
Granted
Jul 8, 2008
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
659
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.

This patent's term runs 659 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. Confidence: High. 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 Jan 27, 2005, when this application, 11/044,974, was filedJan 27, 2025High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+659 days, USPTO patent term adjustment recordNov 17, 2026High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderNov 17, 2026High confidence

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
Jan 27, 2005
Reel 16232, frame 114
Gupta, Bhawna; Risbood, PankajLucent Technologies Inc.Assignment of Assignor's Interest
Sep 21, 2017
Reel 43966, frame 574
WSOU Investments, LLCOmega Credit Opportunities Master Fund, LPSecurity Interest
Sep 25, 2017
Reel 44000, frame 53
Alcatel LucentWSOU Investments, LLCAssignment of Assignor's Interest
May 20, 2019
Reel 49235, frame 68
WSOU Investments, LLCBp Funding Trust, Series Spl-viSecurity Interest
May 21, 2019
Reel 49246, frame 405
Oco Opportunities Master Fund, L.P. (F/K/A Omega Credit Opportunities Master Fund LPWSOU Investments, LLCRelease of Security Interest
Jun 1, 2021
Reel 56990, frame 81
WSOU Investments, LLCOT WSOU Terrier Holdings, LLCSecurity Interest
Jun 3, 2021
Reel 56526, frame 93
Terrier SSC, LLCWSOU Investments, LLCRelease of Security 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