Lapsed Feb 21, 2025 on the fee record · High confidence
20-year base term ends May 26, 2031
Second maintenance fee unpaid; grace period ended.
Held by FMC Corporation
Filed Jan 22, 2015 as application 14/603,029 · Granted Feb 21, 2017
Base term, 20 years from filing, plus 3 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
Lapsed Feb 21, 2025
2011
2031
Clock starts
May 26, 2011
May 26, 2011
No longer in force
Feb 21, 2025
Feb 21, 2025
Granted
Feb 21, 2017
Feb 21, 2017
Term would have run to
May 26, 2031
May 26, 2031
base term
after the term ends
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
3
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 8,969,554.
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.
17
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 May 26, 2031: its 20-year base term plus 3 days of term adjustment for prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 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 May 26, 2011, when application PCT/JP2011/062643, the earliest non-provisional in its chain, was filed (this one was filed Jan 22, 2015) | May 26, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +3 days, USPTO patent term adjustment record | May 29, 2031 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,969,554) | capped to May 26, 2031 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed Feb 21, 2025 | High confidence |
| Computed term end | The steps above, in order | Feb 21, 2025 | High confidence |
This family
| US 8,969,554 | Lapsed on the fee record Mar 2023 | Mar 2023 |
| US 9,573,909 | this patent Feb 2025 | Feb 2025 |
| US 10,070,647 | In force Nov 2034 | Nov 2034 |
| US 10,294,202 | In force Dec 2034 | Dec 2034 |
| US 10,081,608 | Lapsed on the fee record Sep 2022 | Sep 2022 |
| US 12,016,335 | In force Nov 2034 | Nov 2034 |
| Application 16/139,318 | Abandoned not computed | not computed |
| US 11,589,583 | In force Dec 2034 | Dec 2034 |
8 of 17 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 |
|---|---|---|---|
| Jul 22, 2015 Reel 36153, frame 430 | Kumiai Chemical Industry Co., Ltd.; Ihara Chemical Industry Co., Ltd. | FMC Corporation | Assignment of Assignor's Interest |
| Jan 3, 2017 Reel 40824, frame 240 | Shibayama, Atsushi; Kajiki, Ryu; Kobayashi, Masami; Mitsunari, Takashi; Nagamatsu, Atsushi | Kumiai Chemical Industry Co., Ltd.; Ihara Chemical Industry Co., Ltd. | Assignment of Assignor's Interest |
| Jan 3, 2017 reel/frame not recorded | Mitsunari, Takashi; Nagamatsu, Atsushi; Shibayama, Atsushi; Kajiki, Ryu; Kobayashi, Masami | Kumiai Chemical Industry Co., Ltd. | Assignment of Assignor's Interest |
| Jan 3, 2017 reel/frame not recorded | Mitsunari, Takashi; Nagamatsu, Atsushi; Shibayama, Atsushi; Kajiki, Ryu; Kobayashi, Masami | Ihara Chemical Industry Co., Ltd. | Assignment of Assignor's 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
Note
The 3 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 8,969,554.
Citations
1
later US patent cites this one
That is below the median 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.