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

Term ends Feb 19, 2027 · High confidence

Computed 20-year base term

Held by Mitac International Corporation

Filed Jan 9, 2006 as application 11/327,450 · Granted Sep 15, 2009

Base term plus 406 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ends Feb 19, 2027

2006 2027

Clock starts
Jan 9, 2006

Term ends
Feb 19, 2027

Granted
Sep 15, 2009

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

406

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 406 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.

Step	Input	Date after this step	Confidence
Base term, 20 years from filing	Clock starts Jan 9, 2006, when this application, 11/327,450, was filed	Jan 9, 2026	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+406 days, USPTO patent term adjustment record	Feb 19, 2027	High confidence
Terminal disclaimer cap	None on record	no cap applied	High confidence
Patent term extension	None on file	no change	High confidence
Fee events	3 of 3 maintenance fees paid	In force	High confidence
Computed term end	The steps above, in order	Feb 19, 2027	High 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.

Recorded	Assignor	Assignee	Conveyance
Jan 9, 2006 Reel 17451, frame 416	Clark, Brant	Thales Navigation, Inc.	Assignment of Assignor's Interest
Aug 31, 2006 Reel 18194, frame 375	Magellan Navigation, Inc.	Wachovia Capital Finance Corporation (Western)	Security Agreement
Aug 10, 2007 Reel 19682, frame 257	Thales Navigation, Inc.	Magellan Navigation, Inc.	Change of Name
Mar 12, 2009 Reel 22384, frame 904	Magellan Navigation, Inc.	Mitac International Corporation	Assignment of Assignor's Interest
Sep 3, 2009 Reel 23180, frame 609	Wachovia Capital Finance Corporation (Western)	Magellan Navigation, Inc.	Release 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.

What's changing

Feb 2027

Term ends Feb 19, 2027. No further fees fall due before then

Note

The 406 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us

Citations

later US patents cite this one

That is top 25% of utility patents granted in 2009 in our data, the only group it is compared against. How we rank

Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built

Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.

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