129 patents currently held

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

39 more records may belong here and await a decision; they are not counted.

The next term ends in Aug 2027. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Aug 2027

Next term end

105

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045

notable patents fee due within 90 days 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. Fee due within 90 days: a maintenance fee is due within 90 days of when this page was computed and not yet paid.

Notable patents

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

Notable

Isolation Vlan for Layer Two Access Networks US 8,875,233

Cited by 105 later US patents, top 5% of utility patents granted in 2014 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2030.

Ends Sep 2030 · High confidence Also notable

Method for Producing a Nano-Active Powder Material US 11,446,621

Cited by 4 later US patents, top 25% of utility patents granted in 2022 in our data. Protection runs to 2039.

Ends Dec 2039 · High confidence Also notable

Process and Apparatus for Manufacture of Hydroxide Slurry US 10,358,364

A family of 5 related applications built on the 2019 grant. Protection runs to 2035.

Ends Mar 2035 · 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 Dec 2, 2026
The maintenance fee for Hybrid Ranging Using an Out of Band Signal in Optical Networks (US 9,048,946) comes due Dec 2, 2026. Unpaid by Jun 2, 2027, it lapses early.
3 fees due Jan 4 to 23, 2027 · next Jan 4
1 fee due Mar 15, 2027
The maintenance fee for Distributed Cache System for Optical Networks (US 9,137,326) comes due Mar 15, 2027. Unpaid by Sep 15, 2027, it lapses early.
2 fees due Apr 6 to 29, 2027 · next Apr 6
4 fees due May 3 to 10, 2027 · next May 3
1 fee due Jul 19, 2027
The maintenance fee for Distributed System and Method for Flow Identification in an Access Network (US 9,240,938) comes due Jul 19, 2027. Unpaid by Jan 19, 2028, it lapses early.
1 fee due Aug 25, 2027
The maintenance fee for Process for Manufacture of Portland Cement (US 10,570,061) comes due Aug 25, 2027. Unpaid by Feb 25, 2028, it lapses early.
1 fee due Sep 22, 2027
The maintenance fee for Applying Heuristics to Manage Multicast Subscriptions Within Computer Networks (US 9,294,534) comes due Sep 22, 2027. Unpaid by Mar 22, 2028, it lapses early.
2 fees due Oct 5 to 19, 2027 · next Oct 5
1 fee due Nov 5, 2027
The maintenance fee for Channel Bonding Techniques in a Network (US 10,644,800) comes due Nov 5, 2027. Unpaid by May 5, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

9 of the patents on this record were granted since Aug 16, 2026
1 term has ended since Aug 16, 2026

What they patent

The 5 largest of its 105 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Methods and Apparatus for Improving Reliability of an Optical Device Using Auxiliary Lasers in a Photonic Integrated Circuit	3 in force	to Dec 2036
Process and Apparatus for Manufacture of Hydroxide Slurry	3 in force	to Mar 2035
Access Point Port Security System	2 in force	to May 2044
Forward Error Correction Decode Processing Power Reduction	2 in force	to Jun 2043
In-Network Wireless Interference Detection	2 in force	to Dec 2042

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 9,469,884	System and Method for the Calcination of Minerals In force Term ends Aug 28, 2027 · High confidence	In force	Term ends Aug 28, 2027	High confidence
US 7,672,450	Network Interface Device Enclosure In force Term ends Jan 11, 2028 · High confidence	In force	Term ends Jan 11, 2028	High confidence
US 7,586,920	Merging Multiple Data Flows in a Passive Optical Network In force Term ends Jun 9, 2028 · High confidence	In force	Term ends Jun 9, 2028	High confidence
US 8,951,493	Material Compound and a Method of Fabricating the Same In force Term ends Sep 13, 2028 · High confidence	In force	Term ends Sep 13, 2028	High confidence
US 7,664,405	Pluggable Optical Diplexer/Triplexer Module In force Term ends Sep 14, 2028 · High confidence	In force	Term ends Sep 14, 2028	High confidence
US 8,004,966	Efficient Management of Ring Networks In force Term ends Oct 16, 2028 · High confidence	In force	Term ends Oct 16, 2028	High confidence
US 8,139,605	Upgrade Resilient Multi-Transport Optical Network Terminal In force Term ends May 12, 2029 · High confidence	In force	Term ends May 12, 2029	High confidence
US 8,894,743	Method for Processing Flue Gas In force Term ends May 15, 2029 · High confidence	In force	Term ends May 15, 2029	High confidence
US 7,923,855	Communication Between Network Interface Device and Subscriber Devices via Power Supply Lines In force Term ends Sep 4, 2029 · High confidence	In force	Term ends Sep 4, 2029	High confidence
US 7,848,343	Traffic Management for a Passive Optical Network Terminal In force Term ends Sep 30, 2029 · High confidence	In force	Term ends Sep 30, 2029	High confidence

10 of 129 patents shown.

Pro members see all 129.

Pro members: see all 129 patents

Also on record, not counted in the 129: 38 patents ended · 19 applications pending · 26 applications abandoned. List them

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.

Fee due within 90 days marks a patent with a maintenance fee due within 90 days of the date this page was computed and not yet recorded paid, so it can end earlier than the bar shows. A fee left unpaid ends the patent at the close of the six month grace period that follows its due date, not on the due date itself. It is not a prediction that the fee will be missed.

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

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Calix, Inc.