Microsemi Semiconductor ULC
59 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 under 2 name spellings.
Recorded as renamed to MCHP Semiconductor Canada ULC (2026)
1
Ending by 2030
Mar 2030
Next term end
When these terms end
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 18, 2026The maintenance fee for Acoustic delay estimation (US 10,325,613) comes due Dec 18, 2026. Unpaid by Jun 21, 2027, it lapses early.
- 2 fees due Jan 2 to 28, 2027 · next Jan 2
- 2 fees due Mar 1 to 3, 2027 · next Mar 1
- 1 fee due Sep 17, 2027The maintenance fee for Digital phase locked loop clock synthesizer with image cancellation (US 10,594,300) comes due Sep 17, 2027. Unpaid by Mar 17, 2028, it lapses early.
- 1 fee due Oct 28, 2027The maintenance fee for Acoustic echo cancellation using low-frequency double talk detection (US 10,636,435) comes due Oct 28, 2027. Unpaid by Apr 28, 2028, it lapses early.
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 8,538,544 | Implantable RF Telemetry Devices with Power Saving Mode In force · High confidence | In force | High confidence | |
| US 8,774,227 | Multi Input Timing Recovery Over Packet Network In force · High confidence | In force | High confidence | |
| US 8,483,244 | Timing Recovery Over Packet Networks In force · High confidence | In force | High confidence | |
| US 8,325,908 | Method and Apparatus for Detecting Ring Trip Precursors In force · High confidence | In force | High confidence | |
| US 8,396,085 | Feedforward Synchronization in Asynchronous Packet Networks In force · High confidence | In force | High confidence | |
| US 8,379,839 | Method and Apparatus for Controlling Ringing Voltage In force · High confidence | In force | High confidence | |
| US 8,363,822 | Method and Apparatus for Battery Switching During Ringing In force · High confidence | In force | High confidence | |
| US 8,456,189 | Differential Signal Termination Circuit In force · Medium confidence | In force | Medium confidence | |
| US 8,705,728 | Shared Protection Scheme for Multiple Variable Batteries In force · High confidence | In force | High confidence | |
| US 8,442,213 | Method and Apparatus for Shared Positive Protection In force · High confidence | In force | High confidence |
Also on record, not counted in the 53: 59 patents in force now held by others · 11 lapsed for an unpaid fee · 16 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.
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 abandoned