RF Controls LLC

13 patents currently held · Updated Nov 14, 2026

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

Recorded under 2 name spellings.

Ending by 2030

Mar 2028

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 Feb 15, 2027
The maintenance fee for Synchronous Dual Band Signal Acquisition and Source Location System (US 11,728,568) comes due Feb 15, 2027. Unpaid by Aug 16, 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 8,659,430	Radio frequency signal acquisition and source location system In force Ends no later than Mar 31, 2028 · From the USPTO record	In force	Ends no later than Mar 31, 2028	From the USPTO record
US 8,742,896	Steerable phase array antenna RFID tag locater and tracking system and methods In force Ends no later than Sep 9, 2028 · From the USPTO record	In force	Ends no later than Sep 9, 2028	From the USPTO record
US 8,599,024	Radio Frequency Environment Object Monitoring System and Methods of Use In force Term ends Feb 27, 2029 · High confidence	In force	Term ends Feb 27, 2029	High confidence
US 8,698,575	Antenna switching arrangement In force Ends no later than Aug 10, 2029 · From the USPTO record	In force	Ends no later than Aug 10, 2029	From the USPTO record
US 8,344,858	Steerable phase array antenna RFID tag locater and tracking system and methods In force Term ends Dec 25, 2029 · From the USPTO record	In force	Term ends Dec 25, 2029	From the USPTO record
US 8,120,488	Radio Frequency Environment Object Monitoring System and Methods of Use In force Term ends Jul 25, 2030 · High confidence	In force	Term ends Jul 25, 2030	High confidence
US 8,451,121	Calibration and Operational Assurance Method and Apparatus for RFID Object Monitoring System In force Term ends Sep 9, 2030 · High confidence	In force	Term ends Sep 9, 2030	High confidence
US 8,159,367	Methods for noise validated phase ranging RFID location In force Term ends Oct 25, 2030 · From the USPTO record	In force	Term ends Oct 25, 2030	From the USPTO record
US 8,493,182	Phase ranging RFID location system In force Term ends Sep 7, 2031 · From the USPTO record	In force	Term ends Sep 7, 2031	From the USPTO record
US 8,344,823	Antenna switching arrangement In force Term ends Oct 10, 2031 · From the USPTO record	In force	Term ends Oct 10, 2031	From the USPTO record

10 of 13 patents shown.

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Pro members: see all 13 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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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.

2 pending

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