Term ends Jun 7, 2037 · High confidence
20-year base term ends Jun 7, 2037
Held by Blueshift Materials, Inc.
Filed Apr 26, 2018 as application 15/963,880 · Granted Apr 21, 2020
Base term plus 230 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2017
2037
Clock starts
Jun 7, 2017
Jun 7, 2017
Term ends
Jun 7, 2037
Jun 7, 2037
Granted
Apr 21, 2020
Apr 21, 2020
base term
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
230
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 9,963,571.
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.
6
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 230 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 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 Jun 7, 2017, when application 15/616,458, the earliest non-provisional in its chain, was filed (this one was filed Apr 26, 2018) | Jun 7, 2037 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +230 days, USPTO patent term adjustment record | Jan 23, 2038 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 9,963,571) | capped to Jun 7, 2037 | 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 | Jun 7, 2037 | High confidence |
This family
| US 9,963,571 | In force Jun 2037 | Jun 2037 |
| US 10,626,239 | In force Jun 2037 | Jun 2037 |
| US 10,626,240 | this patent Jun 2037 | Jun 2037 |
| US 11,427,693 | In force Jun 2037 | Jun 2037 |
| US 12,054,598 | In force Jun 2037 | Jun 2037 |
| Application 18/750,217 | Pending not computed | not computed |
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 |
|---|---|---|---|
| Apr 27, 2018 Reel 46035, frame 179 | Sakaguchi, Alan D.; Poe, Garrett D.; Irvin, David J.; Joaquin, Alysa M.; Manning, Janae D. | Blueshift International Materials, Inc. | Assignment of Assignor's Interest |
| Nov 15, 2018 Reel 47574, frame 587 | Blueshift International Materials, Inc. | Blueshift Materials, 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Jun 2037
Term ends Jun 7, 2037. Maintenance fees still fall due before then
Note
The 230 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 9,963,571.
Citations
2
later US patents cite this one
That is below the median of utility patents granted in 2020 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.