Microworks Co., Ltd.

80 patents currently held · Updated Nov 14, 2026

5 more in force are now held by other companies

Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

Previously recorded as SK Microworks Co., Ltd. (to 2025)

Ending by 2030

Jan 2027

Next term end

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027202820292030203120322033203420352036203720382039204020412042204320442045

Fee deadlines

Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.

1 fee due Jan 4, 2027
The maintenance fee for Film for glass lamination, composition for glass lamination film, and laminated glass comprising glass lamination film (US 11,691,391) comes due Jan 4, 2027. Unpaid by Jul 6, 2027, it lapses early.
1 fee due Mar 5, 2027
The maintenance fee for Polyester film and flexible display device comprising the same (US 11,745,470) comes due Mar 5, 2027. Unpaid by Sep 7, 2027, it lapses early.
1 fee due May 17, 2027
The maintenance fee for Thermo-Shrinkable Polyester Film (US 9,187,637) comes due May 17, 2027. Unpaid by Nov 17, 2027, it lapses early.
3 fees due Aug 16 to 18, 2027 · next Aug 16
1 fee due Oct 30, 2027
The maintenance fee for Film, Film Manufacturing Method, Cover Film, and Multilayer Electronic Equipment (US 11,969,978) comes due Oct 30, 2027. Unpaid by May 1, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

2 of the patents on this record were granted since Aug 16, 2026

Patents held now

Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.

Patent	Title	Status	Expires	Confidence
US 7,306,835	Thermo-Shrinkable Polyester Film In force Term ends Jan 29, 2027 · High confidence	In force	Term ends Jan 29, 2027	High confidence
US 8,617,696	Multilayered aliphatic polyester film In force Term ends Oct 7, 2029 · From the USPTO record	In force	Term ends Oct 7, 2029	From the USPTO record
US 8,507,057	Heat-shrinkable polyester film and preparation method thereof In force Term ends Nov 23, 2029 · From the USPTO record	In force	Term ends Nov 23, 2029	From the USPTO record
US 9,453,114	Polyester Film and Manufacturing Method Thereof In force Term ends Jan 18, 2030 · High confidence	In force	Term ends Jan 18, 2030	High confidence
US 8,568,841	Thermo-Shrinkable Polyester Film In force Term ends Mar 16, 2030 · High confidence	In force	Term ends Mar 16, 2030	High confidence
US 8,512,833	Heat-shrinkable polyester film In force Term ends Mar 17, 2030 · From the USPTO record	In force	Term ends Mar 17, 2030	From the USPTO record
US 8,663,786	Polyester Film for Optical Application In force Term ends May 29, 2030 · High confidence	In force	Term ends May 29, 2030	High confidence
US 9,028,952	Multilayered Weatherable Film for Solar Cell In force Term ends Aug 15, 2030 · High confidence	In force	Term ends Aug 15, 2030	High confidence
US 8,999,499	White Porous Polyester Film and Preparation Method Thereof In force Term ends Jan 5, 2031 · High confidence	In force	Term ends Jan 5, 2031	High confidence
US 8,815,994	Heat-Shrinkable Polyester-Based Single-Layer Film In force Term ends Mar 31, 2031 · High confidence	In force	Term ends Mar 31, 2031	High confidence

10 of 80 patents shown.

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Pro members: see all 80 patents

Also on record, not counted in the 80: 5 patents in force now held by others · 3 lapsed for an unpaid fee. List them

Sources and methods

Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand. How this record was built

Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

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Published applications

Every application published under this name has become a patent.