Term ends Nov 19, 2034 · High confidence

Computed 20-year base term

Held by Xiaomi Inc.

Filed Jan 30, 2015 as application 14/610,293 · Granted Dec 13, 2016

Base term, 20 years from filing

Today

20 years from filing

Term ends Nov 19, 2034

2014 2034

Clock starts
Nov 19, 2014

Term ends
Nov 19, 2034

Granted
Dec 13, 2016

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.

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.

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. 2 of 3 maintenance fees are paid so far. 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 Nov 19, 2014, when application PCT/CN2014/091543, the earliest non-provisional in its chain, was filed (this one was filed Jan 30, 2015)	Nov 19, 2034	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	None on file	no change	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	2 of 3 maintenance fees paid	In force	High confidence
Computed term end	The steps above, in order	Nov 19, 2034	High confidence

This family

US 9,910,558	In force May 2034	May 2034
US 9,344,882	In force Dec 2033	Dec 2033
US 8,880,121	In force Jul 2033	Jul 2033
US 10,057,424	Lapsed on the fee record Aug 2026	Aug 2026
US 9,389,593	In force Jul 2033	Jul 2033
US 9,591,256	In force Nov 2033	Nov 2033
Application 14/586,023	Abandoned not computed	not computed
US 9,521,251	this patent Nov 2034	Nov 2034

8 of 45 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.

Recorded	Assignor	Assignee	Conveyance
Feb 4, 2015 Reel 34889, frame 251	Liu, Yuxiang; Bai, Zhiyong; Qiao, Zhongliang; Wang, Botian	Xiaomi Inc.	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.

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

What's changing

Nov 2034

Term ends Nov 19, 2034. Maintenance fees still fall due before then

Citations

later US patent cites this one

That is below the median of utility patents granted in 2016 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.

Method and Device for Identifying Telephone Call