Stemcell Technologies Inc.

20 patents currently held · Updated Nov 14, 2026

2 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.

Recorded as renamed to Stemcell Technologies Canada Inc. (2021)

Ending by 2030

Apr 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 Dec 23, 2026
The maintenance fee for Method of Reducing Curvature in a Meniscus of Liquid Medium (US 9,062,283) comes due Dec 23, 2026. Unpaid by Jun 23, 2027, it lapses early.
1 fee due Jul 21, 2027
The maintenance fee for Meniscus Reducing Member (US 10,537,891) comes due Jul 21, 2027. Unpaid by Jan 21, 2028, it lapses early.
2 fees due Aug 16, 2027
2 fees due Sep 1 to 22, 2027 · next Sep 1

Which patents, and when each one lapses · Pro

Recent changes

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

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 8,409,873	Method of Pipetting Using a Pipette Tip Holder In force Term ends Apr 28, 2027 · Medium confidence	In force	Term ends Apr 28, 2027	Medium confidence
US 9,062,283	Method of Reducing Curvature in a Meniscus of Liquid Medium In force Term ends Jul 6, 2029 · High confidence	In force	Term ends Jul 6, 2029	High confidence
US 9,261,454	Cell Culture Vessels for Meniscus Reduction with Aqueous Solutions In force Term ends Sep 14, 2029 · High confidence	In force	Term ends Sep 14, 2029	High confidence
US 9,708,582	Method of Differentiating Stem Cells In force Term ends Oct 13, 2030 · High confidence	In force	Term ends Oct 13, 2030	High confidence
US 9,290,731	Filter Apparatus and Filter Plate System In force Term ends Apr 14, 2032 · High confidence	In force	Term ends Apr 14, 2032	High confidence
US 10,913,929	Method of Differentiating Stem Cells In force Term ends Apr 18, 2032 · High confidence	In force	Term ends Apr 18, 2032	High confidence
US 9,273,285	Shorter Colony-Forming Cell Assay In force Term ends Oct 7, 2032 · High confidence	In force	Term ends Oct 7, 2032	High confidence
US 9,260,684	Cell Culture Device In force Term ends Jan 5, 2033 · High confidence	In force	Term ends Jan 5, 2033	High confidence
US 9,701,935	Magnetic Particles In force Term ends Mar 11, 2034 · High confidence	In force	Term ends Mar 11, 2034	High confidence
US 9,683,983	Method and Insert for Density Gradient Separation In force Term ends Mar 30, 2034 · High confidence	In force	Term ends Mar 30, 2034	High confidence

10 of 20 patents shown.

Pro members see all 20.

Pro members: see all 20 patents

Also on record, not counted in the 20: 2 patents in force now held by others · 2 lapsed for an unpaid fee · 20 ended at full term. 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.

Export every term end as CSV · Pro

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.

3 no status recorded

List them