The Patent Finder
SP

Spartech LLC

First filing 2003
OverviewNotableFeesChangesFamiliesPatent listSources & methods

19 patents currently held

Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
2 more records may belong here and await a decision; they are not counted.

The next term ends in Aug 2027. from the record

Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
7
Ending by 2030
Aug 2027
Next term end
3
Patent families

When these terms end

Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045
notable patents all others 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
Notable: the highest-ranked patents in this portfolio by citations and family size.

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 Feb 25, 2027
    The maintenance fee for Methods and Systems for Use in Forming an Article from a Multi-Layer Sheet Structure (US 9,114,902) comes due Feb 25, 2027. Unpaid by Aug 25, 2027, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

Nothing was recorded against this company's patents in the last 90 days.

What they patent

The 1 largest of its 3 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Patents held now

Soonest term end first.
PatentTitleStatusExpiresConfidence
US 7,609,450Plastic Sheets with Lenticular Lens Arrays
In force
 · High confidence
In forceHigh confidence
US 8,411,363Plastic Sheets with Lenticular Lens Array
In force
 · High confidence
In forceHigh confidence
US 9,018,310Polymer Blend Composition for Automotive Flooring Applications
In force
 · High confidence
In forceHigh confidence
US D768,508Packaging Assembly
In force
 · High confidence
In forceHigh confidence
US D768,509Packaging Assembly
In force
 · High confidence
In forceHigh confidence
US D769,131Packaging Assembly
In force
 · High confidence
In forceHigh confidence
US D769,734Packaging Assembly
In force
 · High confidence
In forceHigh confidence
US D775,472Plastic Sheet with a Surface Pattern
In force
 · High confidence
In forceHigh confidence
US D779,833Plastic Sheet with a Surface Pattern
In force
 · High confidence
In forceHigh confidence
US 8,485,377Modular Container Assembly
In force
 · High confidence
In forceHigh confidence
10 of 19 patents shown.
Pro members see all 19.
Pro members: see all 19 patents
Also on record, not counted in the 19: 4 patents ended · 8 applications abandoned. List them

Sources and methods

Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built
Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited