Also listed on Name: SKC Hi-Tech & Marketing Co., Ltd., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Oct 4, 2032 · High confidence
20-year base term ends Mar 27, 2028
Held by Microworks Solutions Co., Ltd.
Filed Mar 27, 2008 as application 12/079,535 · Granted Oct 7, 2014
Base term plus 1652 days of patent term adjustment (USPTO delay)
Today
2008
2032
Clock starts
Mar 27, 2008
Mar 27, 2008
Term ends
Oct 4, 2032
Oct 4, 2032
Granted
Oct 7, 2014
Oct 7, 2014
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
1,652
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
This patent's term runs 1652 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Mar 27, 2008, when this application, 12/079,535, was filed | Mar 27, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1652 days, USPTO patent term adjustment record | Oct 4, 2032 | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Oct 4, 2032 | High confidence |
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 3, 2008 Reel 21636, frame 258 | Lee, Junwon | Rohm and Haas Denmark Finance A/S | Assignment of Assignor's Interest |
| Feb 16, 2009 Reel 22259, frame 956 | Rohm and Haas Denmark Finance A/S | SKC Haas Display Films Co., Ltd. | Assignment of Assignor's Interest |
| Aug 7, 2017 Reel 43479, frame 570 | SKC Haas Display Films Co., Ltd. | Name: SKC Hi-Tech & Marketing Co., Ltd. | Change of Name |
| Mar 15, 2018 Reel 45616, frame 157 | SKC Hi-Tech & Marketing Co., Ltd. (Company Registration No. 161514-0001344) | SKC Hi-Tech & Marketing Co., Ltd. (Company Registration No. 161511-0225312) | Assignment of Assignor's Interest |
| Jan 20, 2023 Reel 62447, frame 345 | SKC Hi-Tech & Marketing Co., Ltd. | SK Microworks Solutions Co., Ltd. | Change of Name |
| Jan 15, 2026 Reel 74078, frame 923 | SK Microworks Solutions Co., Ltd. | Microworks Solutions Co., Ltd. | 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.
What's changing
Oct 2032
Term ends Oct 4, 2032. No further fees fall due before then
Note
The 1652 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
31
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
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.