Also listed on Gigawatt Day Storage Systems, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Jan 21, 2034 · High confidence
20-year base term ends Sep 27, 2033
Held by Malta Inc.
Filed Feb 23, 2017 as application 15/440,306 · Granted Oct 1, 2019
Base term plus 116 days of patent term adjustment (USPTO delay)
Today
2013
2034
Clock starts
Sep 27, 2013
Sep 27, 2013
Term ends
Jan 21, 2034
Jan 21, 2034
Granted
Oct 1, 2019
Oct 1, 2019
base term
patent term adjustment
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
116
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.
15
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 116 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is 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.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Sep 27, 2013, when application PCT/US2013/062469, the earliest non-provisional in its chain, was filed (this one was filed Feb 23, 2017) | Sep 27, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +116 days, USPTO patent term adjustment record | Jan 21, 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 | In force | High confidence |
| Computed term end | The steps above, in order | Jan 21, 2034 | High confidence |
This family
| Application 61/706,337 | Provisional application no patent term | no patent term |
| Application 61/868,070 | Provisional application no patent term | no patent term |
| Application PCT/US2013/062469 | PCT application no patent term | no patent term |
| US 10,012,448 | Lapsed on the fee record Jul 2026 | Jul 2026 |
| US 10,458,721 | In force Oct 2033 | Oct 2033 |
| US 10,288,357 | In force Jun 2034 | Jun 2034 |
| US 10,422,250 | In force May 2031 | May 2031 |
| US 10,428,693 | this patent Jan 2034 | Jan 2034 |
8 of 15 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 |
|---|---|---|---|
| Nov 13, 2017 Reel 44104, frame 185 | Larochelle, Philippe; Laughlin, Robert B.; Cizak, Nicholas | Gigawatt Day Storage Systems, Inc. | Assignment of Assignor's Interest |
| Nov 13, 2017 Reel 44104, frame 200 | Gigawatt Day Storage Systems | Google Inc. | Assignment of Assignor's Interest |
| Nov 27, 2017 Reel 44511, frame 347 | Google Inc. | X Development LLC | Assignment of Assignor's Interest |
| Aug 7, 2018 Reel 46575, frame 607 | Laughlin, Robert B.; Larochelle, Philippe; Cizek, Nicholas | Gigawatt Day Storage Systems, Inc. | Assignment of Assignor's Interest |
| Dec 4, 2018 Reel 47669, frame 176 | Google LLC | Malta Inc. | Assignment of Assignor's Interest |
| Dec 4, 2018 Reel 47669, frame 183 | X Development LLC | Google LLC | Assignment of Assignor's Interest |
| Mar 6, 2019 Reel 48516, frame 565 | Larochelle, Philippe; Laughlin, Robert B.; Cizek, Nicholas | Gigawatt Day Storage Systems, Inc. | Corrective Assignment to Correct the Spelling of Inventors Name Previously Recorded at Reel: 044104 Frame: 0185. Assignor(S) Hereby Confirms the Assignment. |
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
Jan 2034
Term ends Jan 21, 2034. Maintenance fees still fall due before then
Note
The 116 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
49
later US patents cite this one
That is top 5% of utility patents granted in 2019 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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.