Collateral for a security interest recorded Jun 18, 2024 (TCW Asset Management Company LLC).

Term ends Sep 17, 2028 · Medium confidence

Computed 20-year base term

Why Medium: A parent in the chain could not be resolved.

Held by Telecommunication Systems, Inc.

Filed Sep 23, 2014 as application 14/494,072 · Granted Sep 8, 2015

Base term, 20 years from filing

Today

20 years from filing

Term ends Sep 17, 2028

2008 2028

Clock starts
Sep 17, 2008

Term ends
Sep 17, 2028

Granted
Sep 8, 2015

base term fee events Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 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: Medium. 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 Sep 17, 2008, when application 12/232,417, the earliest non-provisional in its chain, was filed (this one was filed Sep 23, 2014); a parent in its chain could not be resolved (the next row)	Sep 17, 2028	High confidence
Continuity chain	A parent in the chain could not be resolved	dated from this application's own claim	Medium 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	Sep 17, 2028	Medium confidence

This family

US 8,185,087	In force Dec 2029	Dec 2029
US 8,874,068	Lapsed on the fee record Oct 2022	Oct 2022
US 9,131,357	this patent Sep 2028	Sep 2028
US 9,467,826	In force Sep 2028	Sep 2028

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
Oct 15, 2014 Reel 33952, frame 602	Mitchell, Donald L., JR.; Zhu, Yinjun; D'souza, Myron	Telecommunication Systems, Inc.	Assignment of Assignor's Interest
Mar 3, 2016 Reel 37993, frame 1	Comtech Ef Data Corp.; Comtech Xicom Technology, Inc.; Comtech Mobile Datacom Corporation; Telecommunication Systems, Inc.	Citibank N.a., As Administrative Agent	Security Agreement
Jun 18, 2024 Reel 67776, frame 309	Telecommunication Systems, Inc.	TCW Asset Management Company LLC, as Agent	Security Interest
Jun 19, 2024 Reel 67780, frame 566	Citibank, N.A., as Administrative Agent	Comtech Telecommunications Corp.; Comtech Ef Data Corp.; Comtech Mobile Datacom LLC; Comtech Satellite Network Technologies, Inc.; Comtech Systems, Inc.; Comtech Xicom Technology, Inc.; Maple Acquisition LLC; Telecommunication Systems, Inc.	Release of Security Interest in Patents at Reel 037993/FRAME 0001
Jun 19, 2024 reel/frame not recorded	Citibank, N.A., as Administrative Agent	Comtech Telecommunications Corp.	Release of Security Interest in Patents at Reel 037993/FRAME 0001
Jun 19, 2024 reel/frame not recorded	Citibank, N.A., as Administrative Agent	Comtech Ef Data Corp.	Release of Security Interest in Patents at Reel 037993/FRAME 0001
Jun 19, 2024 reel/frame not recorded	Citibank, N.A., as Administrative Agent	Comtech Mobile Datacom LLC	Release of Security Interest in Patents at Reel 037993/FRAME 0001
Jun 19, 2024 reel/frame not recorded	Citibank, N.A., as Administrative Agent	Comtech Satellite Network Technologies, Inc.	Release of Security Interest in Patents at Reel 037993/FRAME 0001
Jun 19, 2024 reel/frame not recorded	Citibank, N.A., as Administrative Agent	Comtech Systems, Inc.	Release of Security Interest in Patents at Reel 037993/FRAME 0001
Jun 19, 2024 reel/frame not recorded	Citibank, N.A., as Administrative Agent	Comtech Xicom Technology, Inc.	Release of Security Interest in Patents at Reel 037993/FRAME 0001
Jun 19, 2024 reel/frame not recorded	Citibank, N.A., as Administrative Agent	Maple Acquisition LLC	Release of Security Interest in Patents at Reel 037993/FRAME 0001
Jun 19, 2024 reel/frame not recorded	Citibank, N.A., as Administrative Agent	Telecommunication Systems, Inc.	Release of Security Interest in Patents at Reel 037993/FRAME 0001

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 2028

Term ends Sep 17, 2028. Maintenance fees still fall due before then

Citations

later US patents cite this one

That is above the median of utility patents granted in 2015 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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