15 patents currently held

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

The next term ends in May 2029. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

May 2029

Next term end

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

202620272028202920302031 2032203320342035 2036203720382039204020412042204320442045

notable patents all others Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know

Notable: the highest-ranked patents in this portfolio by citations and family size.

Notable patents

Ranked by citations and family size, against patents of the same kind granted the same year. How we rank

Notable

Systems and Methods of Mitigating Phantom Call Traffic US 9,036,625

Renewed at every maintenance window since the 2015 grant; no more fees are due before its term ends in 2029. A terminal disclaimer caps this term to an earlier patent's.

Ends Sep 2029 · Low confidence Also notable

Sbc-Localized Handoff US 9,264,944

Granted 2016 and renewed at every maintenance window due so far. Protection runs to 2035.

Ends Jul 2035 · High confidence Also notable

System and Method of Providing Communication Service Using a Private Packet Network Backbone Exchange US 8,792,478

Renewed at every maintenance window since the 2014 grant; no more fees are due before its term ends in 2029.

Ends Jul 2029 · High confidence

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 Aug 16, 2027
The maintenance fee for Sbc-Localized Handoff (US 9,264,944) comes due Aug 16, 2027. Unpaid by Feb 16, 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.

What they patent

The 4 largest of its 11 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Sbc-Localized Handoff	2 in force	to Jul 2035
Systems and Methods of Mitigating Phantom Call Traffic	2 in force	to Jan 2032
System and Method of Providing Communication Service Using a Private Packet Network Backbone Exchange	2 in force	to Mar 2031
Systems and Methods of Providing Multi-Homed Tandem Access	2 in force	to Feb 2031

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 8,559,614	Systems and Methods of Providing Multi-Homed Tandem Access In force Term ends May 20, 2029 · High confidence	In force	Term ends May 20, 2029	High confidence
US 8,792,478	System and Method of Providing Communication Service Using a Private Packet Network Backbone Exchange In force Term ends Jul 29, 2029 · High confidence	In force	Term ends Jul 29, 2029	High confidence
US 9,036,625	Systems and Methods of Mitigating Phantom Call Traffic In force Term ends Sep 18, 2029 · Low confidence	In force	Term ends Sep 18, 2029	Low confidence
US 8,275,112	Systems and Methods of Providing Multi-Homed Tandem Access In force Term ends Feb 23, 2031 · High confidence	In force	Term ends Feb 23, 2031	High confidence
US 8,284,765	System and Method of Providing Communication Service Using a Private Packet Network Backbone Exchange In force Term ends Mar 18, 2031 · High confidence	In force	Term ends Mar 18, 2031	High confidence
US 8,401,166	Systems and Methods of Mitigating Phantom Call Traffic In force Term ends Jan 18, 2032 · High confidence	In force	Term ends Jan 18, 2032	High confidence
US 8,983,507	Private Packet Network Backbone Exchange with Variable Call Termination Location Capability In force Ends no later than Sep 14, 2032 · Medium confidence	In force	Ends no later than Sep 14, 2032	Medium confidence
US 9,729,586	Auto-Dialer Detector for Inter-Carrier Network Switch In force Term ends Mar 9, 2035 · High confidence	In force	Term ends Mar 9, 2035	High confidence
US 9,705,939	Self-Healing Inter-Carrier Network Switch In force Term ends May 20, 2035 · High confidence	In force	Term ends May 20, 2035	High confidence
US 9,264,944	Sbc-Localized Handoff In force Term ends Jul 6, 2035 · High confidence	In force	Term ends Jul 6, 2035	High confidence

10 of 15 patents shown.

Pro members see all 15.

Pro members: see all 15 patents

Sources and methods

Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built

Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.

Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

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Peerless Network, Inc.