Lapsed May 25, 2025 on the fee record · High confidence
20-year base term ends Sep 27, 2037
First maintenance fee unpaid; grace period ended.
Sep 27, 2017
May 25, 2025
May 25, 2021
Sep 27, 2037
Its term would have run to Sep 27, 2037: its 20-year base term, with no 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: High. from the record
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Sep 27, 2017, when application 15/717,795, the earliest non-provisional in its chain, was filed (this one was filed Jul 30, 2020) | Sep 27, 2037 | 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 | Disclaimer resolved from the filed document (refs US 10,460,499, US 10,740,947) | resolves to Sep 27, 2037, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | lapsed May 25, 2025 | High confidence |
| Computed term end | The steps above, in order | May 25, 2025 | High confidence |
This family
| US 10,460,499 | In force Sep 2037 | Sep 2037 |
| US 10,740,947 | In force Sep 2037 | Sep 2037 |
| US 11,017,579 | this patent May 2025 | May 2025 |
| US 11,468,619 | In force no later than Sep 2037 | no later than Sep 2037 |
| US 11,645,806 | In force no later than Sep 2037 | no later than Sep 2037 |
Assignments
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Aug 26, 2020 Reel 53606, frame 777 | Stukalov, Dmitri | WhatsApp Inc. | Assignment of Assignor's Interest |
| Mar 4, 2021 Reel 55559, frame 370 | WhatsApp Inc. | WhatsApp LLC | Change of Name |
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.
A terminal disclaimer resolved from the filed document, referencing US 10,460,499, US 10,740,947, ends no earlier than this term, so it caps nothing.