Tigo Energy files rapid shutdown patent infringement claims against inverter manufacturer SMA

California — Tigo Energy has filed a lawsuit against SMA Solar Technology America LLC.

The complaint includes six patent infringement claims, four of which have resulted in multiple suppliers signing license agreements with Tigo Energy.

The complaint was filed in the United States District Court for the District of Delaware and includes all SMA legal entities in the U.S. and around the world.

The Tigo complaint alleges that SMA products compliant with SunSpec Alliance specifications infringe U.S. patents 8,823,218, 8,933,321, 9,584,021, 9,966,848, 10,256,770, and 10,333,405.

The complaint focuses on various systems and methods used in module-level rapid shutdown units attached to photovoltaic (PV) panels.

Specifically, the complaint alleges that SMA and certain of its suppliers copied Tigo innovations that comply with rapid shutdown requirements of the NFPA 70® National Electric Code®.

According to National Electric Code § 690.12, “Rapid Shutdown of PV Systems on Buildings,” requires that PV system circuits “installed on or in buildings shall include a rapid shutdown function to reduce shock hazard for emergency responders.”

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