Lapsed Jul 11, 2025 on the fee record · High confidence
20-year base term ends Jun 20, 2034
Second maintenance fee unpaid; grace period ended.
Held by Pavestone, LLC
Filed Jun 20, 2014 as application 14/311,189 · Granted Jul 11, 2017
Base term, 20 years from filing, plus 189 days of patent term adjustment (USPTO delay)
Today
Lapsed Jul 11, 2025
2014
2034
Clock starts
Jun 20, 2014
Jun 20, 2014
No longer in force
Jul 11, 2025
Jul 11, 2025
Granted
Jul 11, 2017
Jul 11, 2017
Term would have run to
Dec 26, 2034
Dec 26, 2034
base term
patent term adjustment
after the term ends
fee events
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
189
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
2
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Dec 26, 2034: its 20-year base term plus 189 days of term adjustment for prosecution delay. 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.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Jun 20, 2014, when this application, 14/311,189, was filed | Jun 20, 2034 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +189 days, USPTO patent term adjustment record | Dec 26, 2034 | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed Jul 11, 2025 | High confidence |
| Computed term end | The steps above, in order | Jul 11, 2025 | High confidence |
This family
| US 9,701,046 | this patent Jul 2025 | Jul 2025 |
| US 10,059,043 | Lapsed on the fee record Aug 2026 | Aug 2026 |
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 |
|---|---|---|---|
| Jun 20, 2014 Reel 33153, frame 204 | Karau, William H. | Pavestone, LLC | Assignment of Assignor's Interest |
| Dec 8, 2016 Reel 40604, frame 491 | Pavestone, LLC | Wells Fargo Bank, National Association, as Agent | Security Interest |
| Sep 16, 2020 Reel 53790, frame 860 | Pavestone, LLC | Pavestone, LLC | Change of Address of Assignee |
| Mar 18, 2022 Reel 59314, frame 234 | Pavestone, LLC | Wells Fargo Bank, N.A., as Agent | Security Interest |
| Mar 23, 2022 Reel 59479, frame 437 | United States Pipe and Foundry Company, LLC; Griffin Pipe Products Co., LLC; Custom Fab, Inc.; Bio Clean Environmental Services, Inc.; Modular Wetland Systems, Inc.; Forterra Pipe & Precast, LLC; Forterra Concrete Products, Inc.; Forterra Precast Concepts, LLC; Best Block, LLC; Pavestone, LLC; Contech Engineered Solutions LLC; Keystone Retaining Wall Systems LLC | Wells Fargo Bank, National Association, as Agent | Patent Security Agreement (ABL) |
| Feb 10, 2025 Reel 70170, frame 919 | Best Block, LLC; Contech Engineered Solutions LLC; Custom Building Products, LLC; Forterra Concrete Products, LLC; Forterra Pipe & Precast, LLC; Keystone Retaining Wall Systems LLC; Pavestone, LLC; The Quikrete Companies, LLC; United States Pipe and Foundry Company, LLC; Usp Holdings, LLC | U.S. Bank Trust Company, National Association | Patent Security Agreement |
| Jul 15, 2025 Reel 71931, frame 588 | Pavestone, LLC | Pavestone, LLC | Entity Conversion - De to Ga |
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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 189 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
14
later US patents cite this one
That is top 25% of utility patents granted in 2017 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
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.