Rosetta Stone Ltd.

15 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.

Ending by 2030

Apr 2030

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 Mar 15, 2027
The maintenance fee for Performing a Computerized Language Teaching Lesson Using a Main Computer and a Mobile Device (US 9,135,086) comes due Mar 15, 2027. Unpaid by Sep 15, 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.

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 8,002,551	Language Skills Teaching Method and Apparatus In force Term ends Apr 5, 2030 · High confidence	In force	Term ends Apr 5, 2030	High confidence
US 9,954,938	Performing a Computerized Language Teaching Lesson Using a Main Computer and a Mobile Device In force Term ends Sep 22, 2030 · High confidence	In force	Term ends Sep 22, 2030	High confidence
US 10,812,575	Performing a Computerized Language Teaching Lesson Using a Main Computer and a Mobile Device In force Term ends Sep 22, 2030 · High confidence	In force	Term ends Sep 22, 2030	High confidence
US 8,645,135	Method for Creating a Speech Model In force Term ends Mar 16, 2031 · High confidence	In force	Term ends Mar 16, 2031	High confidence
US 8,308,484	System and Methods for Detecting Deception as to Fluency or Other Ability in a Given Language In force Term ends May 5, 2031 · High confidence	In force	Term ends May 5, 2031	High confidence
US 8,768,697	A Method for Measuring Speech Characteristics In force Term ends Oct 23, 2031 · High confidence	In force	Term ends Oct 23, 2031	High confidence
US 9,135,086	Performing a Computerized Language Teaching Lesson Using a Main Computer and a Mobile Device In force Term ends Nov 9, 2031 · High confidence	In force	Term ends Nov 9, 2031	High confidence
US 8,880,399	Utterance Verification and Pronunciation Scoring by Lattice Transduction In force Term ends Dec 4, 2031 · High confidence	In force	Term ends Dec 4, 2031	High confidence
US 8,972,259	System and Method for Teaching Non-Lexical Speech Effects In force Term ends Jan 16, 2032 · High confidence	In force	Term ends Jan 16, 2032	High confidence
US 8,840,400	Method and Apparatus for Improving Language Communication In force Term ends Feb 23, 2032 · High confidence	In force	Term ends Feb 23, 2032	High confidence

10 of 15 patents shown.

Pro members see all 15.

Pro members: see all 15 patents

Also on record, not counted in the 15: 5 patents in force now held by others · 3 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.

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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.

5 no status recorded

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