The Patent Finder
US

Method, Apparatus, and Computer Program Product for Encryption Key Management Within a Group-Based Communication System

US 11,799,636 In force
OverviewFamilyAssignmentsSources & methods

Term ends Jun 6, 2039 · High confidence

Filed Dec 2, 2020 as application 17/109,671 · Granted Oct 24, 2023
Base term plus 236 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
20 years from filing
2019 2039
Clock starts
Jun 6, 2019
Term ends
Jun 6, 2039
Granted
Oct 24, 2023
base term 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
236
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 10,778,419.
0 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.
7
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 236 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 0 of 3 maintenance fees are paid so far. 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.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Jun 6, 2019, when application 16/434,097, the earliest non-provisional in its chain, was filed (this one was filed Dec 2, 2020)Jun 6, 2039High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+236 days, USPTO patent term adjustment recordJan 28, 2040High confidence
Terminal disclaimer capDisclaimer resolved from the filed document (refs US 10,778,419)capped to Jun 6, 2039High confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events0 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderJun 6, 2039High confidence

This family

US 10,778,419In force
Jun 2039
Jun 2039
US 12,019,607In force
Dec 2039
Dec 2039
US 11,539,675In force
Feb 2040
Feb 2040
US 12,015,699In force
Feb 2041
Feb 2041
US 11,949,739In force
Dec 2039
Dec 2039
US 11,799,636this patent
Jun 2039
Jun 2039
US 11,757,852In force
Jun 2039
Jun 2039
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.
RecordedAssignorAssigneeConveyance
Dec 2, 2020
Reel 54518, frame 281
Crowley, Richard; Drummond, Audrei; Fain, Jessica; Jones, Leah; Frank, Ilan; Kinkel, NikolasSlack Technologies, Inc.Assignment of Assignor's Interest
Oct 1, 2021
Reel 57683, frame 1
Slack Technologies, Inc.; Slack Technologies, LLCSlack Technologies, LLCMerger and Change of Name
Nov 21, 2022
Reel 61972, frame 569
Slack Technologies, LLCSalesforce.com, Inc.Merger
Nov 21, 2022
Reel 61972, frame 769
Salesforce.com, Inc.Salesforce, Inc.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.

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited