Term ends Sep 24, 2031 · High confidence

Computed 20-year base term

Held by Unify Beteiligungsverwaltung GmbH & Co. KG

Filed Feb 23, 2009 as application 12/310,373 · Granted Aug 19, 2014

Base term plus 1578 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ends Sep 24, 2031

2007 2031

Clock starts
May 30, 2007

Term ends
Sep 24, 2031

Granted
Aug 19, 2014

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

1,578

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.

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 runs 1578 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 May 30, 2007, when application PCT/EP2007/055231, the earliest non-provisional in its chain, was filed (this one was filed Feb 23, 2009)	May 30, 2027	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+1578 days, USPTO patent term adjustment record	Sep 24, 2031	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	Sep 24, 2031	High confidence

This family

US 8,811,242	this patent Sep 2031	Sep 2031
US 9,271,319	In force May 2027	May 2027
US 9,560,008	In force May 2027	May 2027
US 9,820,252	In force May 2027	May 2027

4 of 5 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 23, 2009 Reel 22322, frame 587	Falk, Rainer; Kohlmayer, Florian	Siemens Aktiengesellschaft	Assignment of Assignor's Interest
Sep 14, 2012 Reel 28967, frame 427	Siemens Aktiengesellschaft	Siemens Enterprise Communications GmbH & Co. KG	Assignment of Assignor's Interest
Jun 13, 2014 Reel 33156, frame 114	Siemens Enterprise Communications GmbH & Co. KG	Unify GmbH & Co. KG	Change of Name
Nov 18, 2023 Reel 65627, frame 1	Unify GmbH & Co. KG	Unify Patente GmbH & Co. KG	Assignment of Assignor's Interest
Jan 5, 2024 Reel 66197, frame 333	Unify Patente GmbH & Co. KG	Credit Suisse AG, Cayman Islands Branch, as Collateral Agent	Security Interest
Oct 24, 2024 Reel 69242, frame 312	Unify Patente GmbH & Co. KG	Unify Beteiligungsverwaltung GmbH & Co. KG	Change of Name
Jan 14, 2025 Reel 69895, frame 755	UBS AG, Stamford Branch, as Legal Successor to Credit Suisse AG, Cayman Islands Branch	Wilmington Savings Fund Society, FSB	Notice of Succcession of Agency - PL
Jan 14, 2025 Reel 69896, frame 1	UBS AG, Stamford Branch, as Legal Successor to Credit Suisse AG, Cayman Islands Branch	Wilmington Savings Fund Society, FSB	Notice of Succcession of Agency - 2L
Jan 14, 2025 Reel 70006, frame 268	UBS AG, Stamford Branch, as Legal Successor to Credit Suisse AG, Cayman Islands Branch	Wilmington Savings Fund Society, FSB	Notice of Succcession of Agency - 3L
Jun 24, 2025 Reel 71712, frame 821	Wilmington Savings Fund Society, FSB	Mitel (Delaware), Inc.; Mitel Communications, Inc.; Mitel Networks, Inc.; Mitel Networks Corporation	Release of Security Interest
Jun 24, 2025 reel/frame not recorded	Wilmington Savings Fund Society, FSB	Mitel (Delaware), Inc.	Release of Security Interest
Jun 24, 2025 reel/frame not recorded	Wilmington Savings Fund Society, FSB	Mitel Communications, Inc.	Release of Security Interest
Jun 24, 2025 reel/frame not recorded	Wilmington Savings Fund Society, FSB	Mitel Networks, Inc.	Release of Security Interest
Jun 24, 2025 reel/frame not recorded	Wilmington Savings Fund Society, FSB	Mitel Networks Corporation	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.

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

What's changing

Sep 2031

Term ends Sep 24, 2031. No further fees fall due before then

Note

The 1578 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.

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 Arrangement for Providing a Wireless Mesh Network