Also listed on International Business Machines Corporation, an earlier holder on the record. The recorded assignments below show how it moved.

Lapsed Oct 21, 2026 on the fee record · Low confidence

Computed 20-year base term

Third maintenance fee unpaid; grace period ended. The USPTO has not yet posted the lapse.

Held by WRP IP Management, LLC

Filed Dec 28, 2007 as application 11/965,926 · Granted Oct 21, 2014

USPTO first gave this application the number US 8,838,467 and withdrew it before it issued. That number now leads here.

Base term, 20 years from filing, plus 877 days of patent term adjustment (USPTO delay)

Today

Lapsed Oct 21, 2026

2007 2030

Clock starts
Dec 28, 2007

No longer in force
Oct 21, 2026

Granted
Oct 21, 2014

Term would have run to
May 23, 2030

base term patent term adjustment after the term ends 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

877

Days of term adjustment

Read from the USPTO patent term adjustment record, not recalculated here.

None

Terminal disclaimer

No disclaimer on this record.

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.

Its term would have run to May 23, 2030: its 20-year base term plus 877 days of term adjustment for prosecution delay. 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.

Step	Input	Date after this step	Confidence
Base term, 20 years from filing	Clock starts Dec 28, 2007, when this application, 11/965,926, was filed	Dec 28, 2027	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+877 days, USPTO patent term adjustment record	May 23, 2030	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	No fee event states this; the fee state is read from the payments the fee record holds; the fee record shows no payment for this window, and USPTO's status still reads "Patented Case"	lapsed Oct 21, 2026	Low confidence
Computed term end	The steps above, in order	Oct 21, 2026	Low 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 29, 2008 Reel 20429, frame 606	Bobak, Mythili K.; McConnell, Tim A.; Swanson, Michael D.	International Business Machines Corporation	Assignment of Assignor's Interest
Jan 18, 2019 Reel 49033, frame 410	International Business Machines Corporation	WRP IP Management, LLC	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.

What's changing

Note

The 877 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 10% of utility patents granted in 2014 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.

Non-Disruptively Changing a Computing Environment