Racthera Co., Ltd.

20 patents currently held · Updated Nov 14, 2026

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

Ending by 2030

Nov 2033

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 27, 2026
The maintenance fee for Cell Aggregate Including Retinal Tissue and Production Method Therefor (US 11,684,698) comes due Dec 27, 2026. Unpaid by Jun 28, 2027, it lapses early.
1 fee due Aug 13, 2027
The maintenance fee for Method for Producing Dopaminergic Neuron Progenitor Cell (US 11,898,163) comes due Aug 13, 2027. Unpaid by Feb 14, 2028, 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.

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 9,884,045	Transplantation Adjuvant in Cell Therapy Using Neural Progenitor Cells In force Term ends Nov 14, 2033 · High confidence	In force	Term ends Nov 14, 2033	High confidence
US 11,214,771	Production Method for Nerve Tissue In force Term ends Oct 23, 2035 · High confidence	In force	Term ends Oct 23, 2035	High confidence
US 11,214,772	Production Method for Retinal Tissue In force Term ends Oct 23, 2035 · High confidence	In force	Term ends Oct 23, 2035	High confidence
US 12,291,720	Production Method for Retinal Tissue In force Term ends Oct 23, 2035 · High confidence	In force	Term ends Oct 23, 2035	High confidence
US 11,649,432	Method for Producing Retinal Pigment Epithelial Cells In force Term ends Sep 8, 2036 · High confidence	In force	Term ends Sep 8, 2036	High confidence
US 12,385,008	Method for Producing Retinal Tissue In force Term ends Sep 8, 2036 · High confidence	In force	Term ends Sep 8, 2036	High confidence
US 12,221,625	Method for producing retinal pigment epithelial cells In force Term ends Sep 24, 2036 · From the USPTO record	In force	Term ends Sep 24, 2036	From the USPTO record
US 10,810,407	Region Detecting Method and Region Detecting Device Related to Cell Aggregation In force Term ends Apr 16, 2037 · High confidence	In force	Term ends Apr 16, 2037	High confidence
US 11,371,016	Method for Producing Retinal Tissue In force Term ends Apr 21, 2037 · High confidence	In force	Term ends Apr 21, 2037	High confidence
US 12,516,286	Method for Producing Dopaminergic Neuron Progenitor Cell In force Term ends Apr 24, 2037 · Medium confidence	In force	Term ends Apr 24, 2037	Medium confidence

10 of 20 patents shown.

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Pro members: see all 20 patents

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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