Maintenance fees coming due
6 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Dec 25, 2026. Unpaid by Jun 25, 2027, that one lapses early.
A maintenance fee does not end a patent on its due date. It falls due at 3.5, 7.5
and 11.5 years from grant, and the patent lapses only if the fee is still unpaid at the end of the
six month grace period that follows.
| Patent | Title | Holder | Status | Fee due | Lapses if unpaid | Expires | Confidence |
|---|---|---|---|---|---|---|---|
| US 10,331,303 | System, Method, and Apparatus for Maintaining and Updating a Common Message User Interface in a Group Based Communication System In force Fee due Dec 25, 2026 Lapses if unpaid Jun 25, 2027 · High confidence | Slack Technologies, LLC. | In force | Dec 25, 2026 | Jun 25, 2027 | High confidence | |
| US 11,729,228 | Systems and Methods for Sharing Content Externally from a Group-Based Communication Platform In force Fee due Feb 15, 2027 Lapses if unpaid Aug 16, 2027 · High confidence | Slack Technologies, LLC. | In force | Feb 15, 2027 | Aug 16, 2027 | High confidence | |
| US 11,757,852 | Encryption Key Management for International Data Residency In force Fee due Mar 12, 2027 Lapses if unpaid Sep 13, 2027 · High confidence | Salesforce, Inc. | In force | Mar 12, 2027 | Sep 13, 2027 | High confidence | |
| US 11,769,498 | Method, Apparatus, and Computer Program Product for Searchable Real-Time Transcribed Audio and Visual Content Within a Group-Based Communication System In force Fee due Mar 26, 2027 Lapses if unpaid Sep 27, 2027 · High confidence | Slack Technologies, LLC. | In force | Mar 26, 2027 | Sep 27, 2027 | High confidence | |
| US 11,923,998 | Channeling Messaging Communications in a Selected Group-Based Communication Interface In force Fee due Sep 5, 2027 Lapses if unpaid Mar 6, 2028 · Medium confidence | Slack Technologies, LLC | In force | Sep 5, 2027 | Mar 6, 2028 | Medium confidence | |
| US 10,585,562 | System, Method, and Apparatus for Maintaining and Updating a Common Message User Interface in a Group Based Communication System In force Fee due Sep 10, 2027 Lapses if unpaid Mar 10, 2028 · High confidence | Slack Technologies, LLC. | In force | Sep 10, 2027 | Mar 10, 2028 | High confidence |
6 of 6 patents shown. Soonest fee due date first, then patent number.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.