Term ended no later than Oct 16, 2019 · Low confidence
20-year base term ended Apr 28, 2015
USPTO later recorded it as expired for non-payment on Mar 27, 2023.
Apr 28, 1995
Oct 16, 2019
Feb 22, 2011
This patent's term runs 1632 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. Confidence: Low. from the record
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Apr 28, 1995, when application 08/431,716, the earliest non-provisional in its chain, was filed (this one was filed Oct 14, 2004); a parent in its chain could not be resolved (the next row) | Apr 28, 2015 | 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 | +1632 days, USPTO patent term adjustment record | Oct 16, 2019 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 2 maintenance fees paid | term ended | High confidence |
| USPTO status record | Recorded as expired for non-payment on Mar 27, 2023, after the term ended | no change | High confidence |
| Computed term end | The steps above, in order | no later than Oct 16, 2019 | Low confidence |
This family
| US 6,564,321 | Term ended Jun 2015 | Jun 2015 |
| US 7,020,132 | Term ended no later than Jun 2018 | no later than Jun 2018 |
| US 6,857,074 | Term ended May 2015 | May 2015 |
| US 7,895,306 | this patent no later than Oct 2019 | no later than Oct 2019 |
| Application 90/007,539 | Pending not computed | not computed |
| US 7,769,001 | Term ended Jun 2018 | Jun 2018 |
| Application 90/007,953 | Pending not computed | not computed |
| Application 11/609,019 | Abandoned not computed | not computed |
Assignments
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Sep 8, 2009 Reel 23208, frame 72 | J2 Global Communications, Inc. | Acacia Patent Acquisition LLC | Assignment of Assignor's Interest |
| Oct 13, 2009 Reel 23379, frame 544 | Acacia Patent Acquisition Corporation | Unified Messaging Solutions LLC | Assignment of Assignor's Interest |
| Oct 20, 2009 Reel 23395, frame 41 | Acacia Patent Acquisition LLC | Unified Messaging Solutions LLC | Assignment of Assignor's Interest |
| May 25, 2010 Reel 24434, frame 208 | Unified Messaging Solutions LLC. | Advanced Messaging Technologies, Inc. | Assignment of Assignor's Interest |
| Oct 13, 2021 Reel 57937, frame 1 | Advanced Messaging Technologies, Inc. | J2 Cloud Services, LLC | Assignment of Assignor's Interest |
| Mar 9, 2022 Reel 59357, frame 3 | J2 Cloud Services, LLC | Mufg Union Bank, N.A., as Collateral Agent | Security Interest |
| Jul 9, 2025 Reel 71889, frame 496 | U.S. Bank National Association, as Successor to Mufg Union Bank, N.A. | Consensus Cloud Solutions, LLC F/K/A J2 Cloud Services, LLC | Release of Security 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 is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Oct 16, 2019. We will not guess the cap.