Covestro LLC

194 patents currently held · Updated Nov 14, 2026

33 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 Bayer MaterialScience LLC (to 2015)

Ending by 2030

Nov 2026

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 Nov 19, 2026
The maintenance fee for Process for the in situ production of polyether polyols based on renewable materials and their use in the production of flexible polyurethane foams (US 9,035,105) comes due Nov 19, 2026. Unpaid by May 19, 2027, it lapses early.
3 fees due Dec 4 to 13, 2026 · next Dec 4
3 fees due Jan 18 to 23, 2027 · next Jan 18
6 fees due Feb 8 to 28, 2027 · next Feb 8
6 fees due Mar 12 to 29, 2027 · next Mar 12
1 fee due Apr 20, 2027
The maintenance fee for Polybutadiene modified polymer polyols, foams prepared from polybutadiene modified polymer polyols, and processes for the production thereof (US 9,163,099) comes due Apr 20, 2027. Unpaid by Oct 20, 2027, it lapses early.
7 fees due May 3 to 28, 2027 · next May 3
2 fees due Jun 1 to 26, 2027 · next Jun 1
2 fees due Jul 9 to 28, 2027 · next Jul 9
2 fees due Aug 20 to 25, 2027 · next Aug 20
2 fees due Sep 17 to 19, 2027 · next Sep 17
5 fees due Oct 9 to 30, 2027 · next Oct 9
2 fees due Nov 5, 2027

Which patents, and when each one lapses · Pro

Recent changes

1 of the patents on this record was granted since Aug 16, 2026
5 terms have ended 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 9,127,154	Impact resistant, flame retardant thermoplastic molding composition In force Term ends Nov 24, 2026 · From the USPTO record	In force	Term ends Nov 24, 2026	From the USPTO record
US 7,456,229	Process for the production of rigid and semi-rigid foams with low amounts of diisocyanate using polymer polyols characterized by high solids and a high hydroxyl number and the resultant foams In force Term ends Nov 25, 2026 · From the USPTO record	In force	Term ends Nov 25, 2026	From the USPTO record
US 7,524,898	Thermoplastic molding composition having improved toughness at low temperatures and surface appearance In force Term ends Feb 28, 2027 · From the USPTO record	In force	Term ends Feb 28, 2027	From the USPTO record
US 7,445,770	Polyurethane dispersions for use in personal care products In force Term ends Mar 14, 2027 · From the USPTO record	In force	Term ends Mar 14, 2027	From the USPTO record
US 7,737,243	Highly Productive Coating Composition for Automotive Refinishing In force Term ends Jul 17, 2027 · High confidence	In force	Term ends Jul 17, 2027	High confidence
US 7,678,840	Reduction of MDI emissions in cavity filling NVH polyurethane foams In force Term ends Jul 21, 2027 · From the USPTO record	In force	Term ends Jul 21, 2027	From the USPTO record
US 7,473,677	High productivity process for alkylphenol ethoxylates In force Term ends Jul 31, 2027 · From the USPTO record	In force	Term ends Jul 31, 2027	From the USPTO record
US 7,799,848	Impact resistant, flame retardant thermoplastic molding composition In force Ends no later than Nov 30, 2027 · From the USPTO record	In force	Ends no later than Nov 30, 2027	From the USPTO record
US RE43,616	Flame resistant polycarbonate composition In force Term ends Jan 11, 2028 · From the USPTO record	In force	Term ends Jan 11, 2028	From the USPTO record
US 9,193,860	Thermoplastic molding composition based on AES rubber with low surface gloss In force Term ends Jan 20, 2028 · From the USPTO record	In force	Term ends Jan 20, 2028	From the USPTO record

10 of 194 patents shown.

Pro members see all 194.

Pro members: see all 194 patents

Also on record, not counted in the 194: 33 patents in force now held by others · 118 lapsed for an unpaid fee · 170 ended at full term · 2 surrendered on reissue. 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

US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.

16 pending · 24 abandoned · 93 no status recorded

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