The Patent Finder
US

Bidirectional Power Converters

US 8,593,115 In force
OverviewFamilyAssignmentsSources & methods

Also listed on Linear Technology Holding LLC, an earlier holder on the record. The recorded assignments below show how it moved.

Term ends Oct 29, 2027 · High confidence

Filed Aug 12, 2010 as application 12/855,232 · Granted Nov 26, 2013
Base term, 20 years from filing
Today
20 years from filing
2007 2027
Clock starts
Oct 29, 2007
Term ends
Oct 29, 2027
Granted
Nov 26, 2013
base term 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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,536,840, to Oct 29, 2027. The term already ends on or before that date, so the cap shortened nothing.
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.
2
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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 Oct 29, 2007, when application 11/980,182, the earliest non-provisional in its chain, was filed (this one was filed Aug 12, 2010)Oct 29, 2027High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capDisclaimer resolved from the filed document (refs US 8,536,840)resolves to Oct 29, 2027, no earlier than this term, so no changeHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderOct 29, 2027High confidence

This family

Application 11/980,182Abandoned
not computed
not computed
US 8,593,115this patent
Oct 2027
Oct 2027
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
Feb 1, 2022
Reel 58846, frame 821
Linear Technology LLCAnalog Devices International Unlimited CompanyAssignment of Assignor's Interest
May 31, 2022
Reel 60244, frame 779
Linear Technology CorporationLinear Technology LLCChange of Name

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