Beechrock Limited

40 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

Aug 2029

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 Detecting multitouch events in an optical touch-sensitive device using line images (US 9,063,615) comes due Dec 23, 2026. Unpaid by Jun 23, 2027, it lapses early.
3 fees due Jan 21 to 28, 2027 · next Jan 21
2 fees due Mar 3 to 24, 2027 · next Mar 3
1 fee due Apr 27, 2027
The maintenance fee for Optical coupler for use in an optical touch sensitive device (US 9,170,683) comes due Apr 27, 2027. Unpaid by Oct 27, 2027, it lapses early.
1 fee due May 19, 2027
The maintenance fee for Augmented optical waveguide for use in an optical touch sensitive device (US 10,481,735) comes due May 19, 2027. Unpaid by Nov 19, 2027, it lapses early.
1 fee due Jul 14, 2027
The maintenance fee for Instrument detection with an optical touch sensitive device (US 10,534,480) comes due Jul 14, 2027. Unpaid by Jan 14, 2028, it lapses early.
1 fee due Oct 21, 2027
The maintenance fee for Instrument detection with an optical touch sensitive device, with associating contacts with active instruments (US 10,627,960) comes due Oct 21, 2027. Unpaid by Apr 21, 2028, it lapses early.
1 fee due Nov 10, 2027
The maintenance fee for Method and apparatus for detecting a multitouch event in an optical touch-sensitive device (US 9,335,864) comes due Nov 10, 2027. Unpaid by May 10, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

1 term has 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 8,350,831	Method and Apparatus for Detecting a Multitouch Event in an Optical Touch-Sensitive Device In force Term ends Aug 7, 2029 · High confidence	In force	Term ends Aug 7, 2029	High confidence
US 8,461,512	Optical control system with modulated emitters In force Term ends Aug 7, 2029 · From the USPTO record	In force	Term ends Aug 7, 2029	From the USPTO record
US 8,723,839	Method and apparatus for detecting a multitouch event in an optical touch-sensitive device In force Term ends Aug 7, 2029 · From the USPTO record	In force	Term ends Aug 7, 2029	From the USPTO record
US 8,723,840	Method and apparatus for detecting a multitouch event in an optical touch-sensitive device In force Term ends Aug 7, 2029 · From the USPTO record	In force	Term ends Aug 7, 2029	From the USPTO record
US 8,952,316	Optical Control System with Modulated Emitters In force Term ends Aug 7, 2029 · Medium confidence	In force	Term ends Aug 7, 2029	Medium confidence
US 9,086,762	Optical control system with modulated emitters In force Term ends Aug 7, 2029 · From the USPTO record	In force	Term ends Aug 7, 2029	From the USPTO record
US 9,335,864	Method and apparatus for detecting a multitouch event in an optical touch-sensitive device In force Ends no later than Aug 7, 2029 · From the USPTO record	In force	Ends no later than Aug 7, 2029	From the USPTO record
US 9,552,104	Detecting Multitouch Events in an Optical Touch-Sensitive Device Using Touch Event Templates In force Term ends Aug 7, 2029 · High confidence	In force	Term ends Aug 7, 2029	High confidence
US 10,795,506	Detecting Multitouch Events in an Optical Touch-Sensitive Device Using Touch Event Templates In force Term ends Aug 7, 2029 · High confidence	In force	Term ends Aug 7, 2029	High confidence
US 8,531,435	Detecting multitouch events in an optical touch-sensitive device by combining beam information In force Term ends Aug 11, 2029 · From the USPTO record	In force	Term ends Aug 11, 2029	From the USPTO record

10 of 40 patents shown.

Pro members see all 40.

Pro members: see all 40 patents

Also on record, not counted in the 40: 6 lapsed for an unpaid fee. 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.

1 no status recorded

List them