Term ends no later than Jun 27, 2027 · Medium confidence
20-year base term ended Nov 13, 2023
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Held by Evoqua Water Technologies LLC
Filed Dec 19, 2005 as application 11/311,528 · Granted Nov 25, 2014
Base term plus 1322 days of patent term adjustment (USPTO delay)
Today
2003
2027
Clock starts
Nov 13, 2003
Nov 13, 2003
Ends no later than
Jun 27, 2027
Jun 27, 2027
Granted
Nov 25, 2014
Nov 25, 2014
base term
patent term adjustment
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
1,322
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
3 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.
11
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 1322 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. All three maintenance fees are recorded paid; no more fees are due. Confidence: Medium. 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.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Nov 13, 2003, when application 10/712,248, the earliest non-provisional in its chain, was filed (this one was filed Dec 19, 2005) | Nov 13, 2023 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1322 days, USPTO patent term adjustment record | Jun 27, 2027 | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | no later than Jun 27, 2027 | Medium confidence |
This family
| US 7,862,700 | In force May 2028 | May 2028 |
| US 8,377,279 | In force May 2027 | May 2027 |
| US 7,083,733 | Term ended Jul 2024 | Jul 2024 |
| US 7,563,351 | Term ended Mar 2026 | Mar 2026 |
| US 7,846,340 | Term ended Sep 2025 | Sep 2025 |
| US 8,894,834 | this patent no later than Jun 2027 | no later than Jun 2027 |
| US 8,114,260 | Term ended Jun 2024 | Jun 2024 |
| Application 12/950,050 | Abandoned not computed | not computed |
8 of 11 applications in this family shown, earliest filings first. 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.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Oct 20, 2006 Reel 18418, frame 212 | Usfilter Corporation | Siemens Water Technologies Holding Corp. | Change of Name |
| Apr 15, 2011 Reel 26138, frame 605 | Siemens Water Technologies Holding Corp. | Siemens Industry, Inc. | Merger |
| Sep 20, 2013 Reel 31249, frame 788 | Siemens Industry, Inc. | Siemens Water Technologies LLC | Assignment of Assignor's Interest |
| Jan 24, 2014 Reel 32126, frame 430 | WTG Holdings III Corp.; WTG Holdings II Corp.; Siemens Treated Water Outsourcing Corp.; Siemens Water Technologies LLC | Credit Suisse AG, Cayman Islands Branch, as Collateral Agent | Intellectual Property Security Agreement (Second Lien) |
| Jan 24, 2014 Reel 32126, frame 487 | WTG Holdings III Corp.; WTG Holdings II Corp.; Siemens Treated Water Outsourcing Corp.; Siemens Water Technologies LLC | Credit Suisse AG, Cayman Islands Branch, as Collateral Agent | Intellectual Property Security Agreement (First Lien) |
| Feb 7, 2014 Reel 32173, frame 401 | Siemens Water Technologies LLC | Evoqua Water Technologies LLC | Change of Name |
| Apr 6, 2021 Reel 55845, frame 245 | Credit Suisse AG, Cayman Islands Branch, as Collateral Agent | Siemens Water Technologies LLC | Release of Security Interest (Reel/Frame 032126/0487) |
| Apr 6, 2021 Reel 55845, frame 311 | Credit Suisse AG, Cayman Islands Branch, as Collateral Agent | Siemens Water Technologies LLC | Release of Security Interest (Reel/Frame 032126/0430) |
| Apr 7, 2021 Reel 55848, frame 689 | Evoqua Water Technologies LLC; Neptune Benson, Inc. | JPMorgan Chase Bank, N.A., as Collateral Agent | Security Interest |
| May 26, 2023 Reel 63787, frame 943 | JPMorgan Chase Bank N.A., as Collateral Agent | Evoqua Water Technologies LLC; Neptune Benson, Inc. | Release of Security Interest |
| May 26, 2023 reel/frame not recorded | JPMorgan Chase Bank N.A., as Collateral Agent | Evoqua Water Technologies LLC | Release of Security Interest |
| May 26, 2023 reel/frame not recorded | JPMorgan Chase Bank N.A., as Collateral Agent | Neptune Benson, Inc. | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Jun 2027
Term ends no later than Jun 27, 2027. No further fees fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 1322 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Jun 27, 2027. We will not guess the cap.
Citations
25
later US patents cite this one
That is top 25% of utility patents granted in 2014 in our data, the only group it is compared against.
How we rank
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. Related patents and pending applications may cover overlapping subject matter.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.