US 11095387

I'll search for the specific patent number and any related 2026 litigation activity.

Let me search more specifically for litigation involving this patent and its current owner.

Let me look specifically at whether the '387 patent itself appears in any 2026 docket, distinct from its continuations.

US Patent 11,095,387 (US11095387B2) — Analyst Summary

Confidence note up front: The bibliographic and claim details below come from the patent's own full text (authoritative). The litigation/ownership findings come from web search and are reported as found, with an explicit flag where I could not confirm a match. I did not locate any CAFC 2026 docket naming US 11,095,387; treat the litigation portion as partially unverified.

Bibliographic data (literal, as listed)

Ownership chain (as recorded): NEC Corp → NEC Asia Pacific Pte Ltd. (2024-03-21) → IP WAVE PTE. LTD. (2024-10-03) → PLS XLIV LLC (2025-03-20) → RADIANT PATENTS LLC (2025-10-01, "change of name"). A subsequent 2025-11-13 corrective assignment lists PLS XLIV LLC again. Note also a Google Patents "Other versions" / earliest-family entry: PCT/JP2016/000346 (WO2016121361A1) and the parent US 15/545,588 (US 10,374,740 B2). The '387 is a continuation of 15/545,588; 15/545,588 was itself a National Stage of PCT/JP2016/000346, claiming priority from JP 2015-013258 (2015-01-27).

Abstract (as published)

Provided is a wavelength path communication node device with no collision of wavelengths and routes, capable of outputting arbitrary wavelengths, and capable of outputting them to arbitrary routes. An add/drop multiplexer (11) includes a communication unit (101) that communicates an optical signal with at least one client device and at least one network and a control unit (102) that indicates a transfer destination of the optical signal according to an attribute of the received optical signal to the communication unit (101). The control unit (102) indicates an attenuation amount of the optical signal to the communication unit (101) for each connected device. When a connected device is changed, the control unit (102) instructs the communication unit (101) to change the attenuation amount. The communication unit (101) attenuates the optical signal with the attenuation amount indicated by the control unit (102) and transfers the attenuated optical signal to a transfer destination.

Plain-language overview of the independent claims

The patent has three independent claims: claim 1 (apparatus), claim 5 (system), and claim 9 (method). They are essentially the same invention expressed in three statutory categories.

Claim 1 — Optical communication apparatus

• A demultiplexer splits a wavelength-multiplexed signal into multiple optical signals (one per wavelength).
• An attenuator attenuates one of those optical signals by an amount that corresponds to a first optical device, and the attenuated signal is sent to that first optical device.
• A controller sends "attenuation information" for the first optical device to the attenuator.
• The key limitation: when the destination is switched from the first optical device to a second optical device, the controller sends the attenuation information corresponding to the second optical device, and the attenuator then attenuates with the amount matching the second device.
• In short: per-wavelength, per-destination adjustable attenuation that is re-programmed when you repoint the output.

Claim 5 — Optical communication system

• Same inventive core, but claimed as a system comprising a network management apparatus that controls the optical communication apparatus, plus the apparatus itself with the same demultiplexer / attenuator / controller and the same "switch destination → change attenuation information" behavior.
• The management device aspect ties to the fourth embodiment (an NMS/EMS that registers "connection information" and pushes connected-device changes to the add/drop multiplexer).

Claim 9 — Optical communication method

• The method counterpart: demultiplex the WDM signal; attenuate an optical signal with an amount corresponding to a first device; send the attenuated signal to the first device; and attenuate with an amount corresponding to a second device when the destination is switched from the first to the second device.
• Notably, claim 9 as written does not explicitly recite the "adding/inserting" step or a controller — it is the attenuation-switching method.

Selected dependent claims of interest

• Claims 2 & 10: controller receives connection information from a management device and identifies the attenuation information based on it.
• Claims 3 & 11: same, but specifically where the connection information indicates the switch from first to second device.
• Claims 4, 8, 12: the destination is a client device or a network.
• Claims 13, 14, 15: the attenuation amount is changed depending on whether the optical device is a cross-connect or a client device — this is the claim set that most directly maps to FIGS. 6 and 8 (the "XC" vs "DROP"/"ADD" port-repurposing examples).

Technical context (from the specification)

The stated problem: conventional ROADM-style add/drop multiplexers use a fixed attenuation amount, so the device connected to a given port cannot be changed. The invention makes attenuation variable and destination-dependent, so an arbitrary device (cross-connect, network, client/transponder, terminal station) can be hung off an arbitrary port. Embodiments cover: (1) a general add/drop multiplexer with communication + control units; (2) a drop unit / add unit split; (3) WSS implementations (drop-side WSS 200 and add-side WSS 300) with per-wavelength variable optical attenuators and optical switches; and (4) a management device (NMS/EMS) that pushes connection changes to the multiplexer. The specification also notes the attenuation amount may be zero, and that an amplifier may replace the attenuator (attenuation amount repurposed as amplification amount).

2026 litigation / CAFC search results

What I found (with a caveat):

• Radiant Patents LLC is actively asserting optical-network patents in 2026. A search result describes Radiant Patents LLC v. Nokia Corp, No. 2:26-cv-00074 (E.D. Tex., filed 01/26/2026), cause of action "Patent Infringement," status open. Another source lists asserted patents including '431, '789, '095, '188, '366 ("+3 more"). Sources: https://ai-lab.exparte.com/case/dct/txed/2:26-cv-00074/radiant-patents-llc-v-nokia-corp and https://ai-lab.exparte.com/case/dct/txed/2:26-cv-00074/doc/analysis/16
• Unified Patents reports prior-art challenges to Radiant Patents' US 10,623,095 and US 11,431,431, and describes the '431 patent as "an optical wavelength-path communication node, essentially an add/drop multiplexer for optical networks." US 11,431,431 is the direct continuation of US 11,095,387 (same priority 2015-01-27, per the family data). Source: https://www.unifiedpatents.com/insights/2026/5/5/radiant-patents-optical-networking-patents-prior-art-found

What I could NOT confirm:

• I found no search result that explicitly names US 11,095,387 (the '387) as an asserted patent in the E.D. Tex. Nokia case. The asserted-family member that clearly appears is US 11,431,431 (the '431), a continuation of the '387. Source-asserted patent lists I retrieved did not resolve the "+3 more."
• I found no CAFC 2026 docket (appeal number) naming US 11,095,387. Several 2026 CAFC summaries surfaced in the search (e.g., AGI SureTrack v. Farmers Edge, Arendi/Oath, Enviro Tech v. Safe Foods, NantWorks v. Niantic, REGENXBIO v. Sarepta), but none involved the '387.

Because your instruction is to interpret identifiers literally and prefer search results over training data: I am reporting the E.D. Tex. case and the '431 prior-art activity as adjacent evidence, not as proof that the '387 itself is in suit. If you need certainty on whether the '387 patent is a named asserted patent in 2:26-cv-00074, that requires pulling the actual complaint (the "+3 more" patents) from the docket — I could not verify it from the available results.

Bottom line

US 11,095,387 is a NEC-originated (inventor Yurie Matsuyama), post-AIA continuation patent on variable per-wavelength attenuation that is reconfigured when the optical destination changes, claimed as apparatus (cl. 1), system (cl. 5), and method (cl. 9), with dependent claims distinguishing cross-connect vs. client device attenuation. It was owned by Radiant Patents LLC (an MVRE LLC NPE entity, f/k/a PLS XLIV LLC) at last record, and its direct continuation US 11,431,431 is a confirmed 2026 assertion/prior-art target against Nokia in E.D. Tex. I have no confirmed record of the '387 patent itself in a 2026 CAFC docket or as a named asserted patent, and I flag that as an open item rather than asserting it.