Radiant Patents optical networking patents prior art found

The team at Unified used Pearl to successfully identify and chart prior art against U.S. Patent 10,623,095 and U.S. Patent 11,431,431, owned and asserted by Radiant Patents LLC (f/k/a PLS XLIV LLC), an NPE and entity of MVRE LLC. The patents have been asserted against Nokia. The ‘095 patent relates to signal detection device for WDM optical communication systems. The ‘431 patent relates to an optical wavelength-path communication node, essentially an add/drop multiplexer for optical networks.

Identified Prior Art on U.S. Patent 10,623,095 (click to download chart)

Identified Prior Art on U.S. Patent 11,431,431 (click to download chart)

Two Chinese ETRI video codec patents held invalid after appeals

After the China National IP Administration (CNIPA) invalidated the patents in administrative proceedings, and the Beijing IP Court upheld that invalidation, Electronics and Telecommunications Research Institute (ETRI) filed a second appeal to China's Supreme People's Court. On April 30, 2026, Unified Patents received two judgements where China’s Supreme People's Court upheld the original invalidations on CN103384333B and CN104219523B.

CN'333 and CN‘523 were generally directed to applying the same prediction mode to a unidirectional series of blocks and are related to patents that are designated essential to the Access Advance (formerly known as HEVC Advance) patent pool, as well as, SISVEL’s AV1 and VP9 patent pools.

Unified was represented by Tao Chen, Yu Yan, and Peter Zhang at Wei Chixue Law Firm, and the case was managed by in-house counsel, Jessica L.A. Marks and Roshan Mansinghani.

$4,000 awarded for Radiant Patents optical patents prior art

Unified is pleased to announce PATROLL crowdsourcing contest winners below totaling $4,000 in cash prizes. The patents are owned and asserted by Radiant Patents LLC (f/k/a PLS XLIV LLC), an NPE and entity of MVRE LLC. The patents have been asserted against Nokia.

We would also like to thank the dozens of other high-quality submissions that were made on these patents. The ongoing contests are open to anyone, and include tens of thousands of dollars in rewards available for helping the industry to challenge NPE patents of questionable validity by finding and submitting prior art in the contests. Visit PATROLL today to learn more about how to participate.

US 10924188 - Digital Signal Modulation

Winner - Umesh Kumar

Winning Submission: “Rate-Adaptive Modulation and Low-Density Parity-Check Coding for Optical Fiber Transmission Systems,” Gho and Kahn (2012)

DOWNLOAD WINNING PRIOR ART

US 10404366 - Monitoring Optical Signals

Winners - Umesh Kumar, Pankaj Kumar

Winning Submissions: US 8805185; US 6529316; JP 2000041026

DOWNLOAD WINNING PRIOR ART

$4,000 awarded for Key Patent Innovations entity, Malikie Innovations, cryptographic patents prior art

Unified is pleased to announce PATROLL crowdsourcing contest winners below totaling $4,000 in cash prizes. The patents are owned by Malikie Innovations Limited, an NPE and entity of Key Patent Innovations. The patents generally relate to cryptographic systems. The ‘062 patent has been asserted against MARA Holdings, Core Scientific, and Foundry Digital LLC.

We would also like to thank the dozens of other high-quality submissions that were made on these patents. The ongoing contests are open to anyone, and include tens of thousands of dollars in rewards available for helping the industry to challenge NPE patents of questionable validity by finding and submitting prior art in the contests. Visit PATROLL today to learn more about how to participate.

US 7020281 - Timing Attack Resistant Cryptographic System

Winner - Umesh Kumar

Winning Submissions: "Speeding up the computations on an elliptic curve using addition-subtraction chains" by François Morain and Jorge Olivos (1990); Minimum weight modified signed-digit representations and fast exponentiation,” by Jedwab, J. & Mitchell, C.J. (1989); Speeding up Elliptic Cryptosystems by Using a Signed Binary Window Method" by Kenji Koyama and Yukio Tsuruoka (1993)

DOWNLOAD WINNING PRIOR ART

US 8666062 - Performing Finite Field Calculations

Winners - Umesh Kumar & Ketan Sachdeva

Winning Submissions: US 7069287; “Elliptic Curve Cryptography on Smart Cards Without Coprocessors,” Adam D. Woodbury, Daniel V. Bailey, and Christof Paar (2000)

DOWNLOAD WINNING PRIOR ART

K.Mizra communication patents prior art found

The team at Unified used Pearl to successfully identify and chart prior art against U.S. Patent 9,235,259 and U.S. Patent 9,602,649, owned by K.Mizra LLC, an NPE. The ‘259 patent relates detecting short “tick” sounds in noisy audio using a two-stage process. The ‘649 patent relates to a device-proximity/event-matching method using synchronized sensor triggers and audio comparison.

Identified Prior Art on U.S. Patent 9,235,259 (click to download chart)

Identified Prior Art on U.S. Patent 9,602,649 (click to download chart)