Lapsed May 27, 2022 on the fee record · Medium confidence
20-year base term ended Mar 7, 2026
Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 8,138,891), so the cap could be lower.
Second maintenance fee unpaid; grace period ended.
Mar 7, 2006
May 27, 2022
May 27, 2014
Nov 7, 2026
Its term would have run to Nov 7, 2026: its 20-year base term plus 245 days of term adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. Confidence: Medium. from the record
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Mar 7, 2006, when application 11/370,530, the earliest non-provisional in its chain, was filed (this one was filed Jan 27, 2012) | Mar 7, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +245 days, USPTO patent term adjustment record | Nov 7, 2026 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,138,891, US 8,497,762) | resolves to Nov 7, 2026, no earlier than this term, so no change | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed May 27, 2022 | High confidence |
| Computed term end | The steps above, in order | May 27, 2022 | Medium confidence |
This family
| US 8,497,762 | In force Oct 2031 | Oct 2031 |
| Application PCT/US2007/005843 | PCT application no patent term | no patent term |
| US 8,138,891 | In force no later than Dec 2026 | no later than Dec 2026 |
| US 8,736,423 | this patent May 2022 | May 2022 |
Assignments
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Feb 28, 2013 Reel 29896, frame 965 | Sensormatic Electronics, LLC | ADT Services GmbH | Assignment of Assignor's Interest |
| Apr 25, 2013 Reel 30289, frame 441 | ADT Services GmbH | Tyco Fire & Security GmbH | Merger |
| Oct 2, 2018 Reel 47182, frame 674 | Tyco Fire & Security GmbH | Sensormatic Electronics, LLC | Assignment of Assignor's Interest |
| Oct 3, 2018 Reel 47188, frame 715 | Tyco Fire & Security GmbH | Sensormatic Electronics, 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
A terminal disclaimer resolved from the filed document, referencing US 8,138,891, US 8,497,762, ends no earlier than this term, so it caps nothing.