Tigo Energy files patent suit against ex-partner company SMA

The U.S. provider of MLPE (Module Level Power Electronics) systems for solar power plants Tigo Energy Inc. has filed a lawsuit against German inverter and system technology provider SMA Solar Technology AG for infringement of patent rights. Before, Tigo had already filed similar lawsuits against other companies.
The suit filed in the District Court of Delaware targets SMA’s US subsidiary SMA Solar Technology America LLC, but, according to Tigo, affects »all SMA legal entities in the U.S. and around the world.«
Specifically, the case involves SMA products for rapid disconnection of solar modules that meet the specifications of the so-called »SunSpec Alliance.« The alliance of about 100 companies in the solar and storage industries published the specifications in 2017, and in September 2017, SMA and Tigo announced they would jointly develop products in accordance. In March 2018, they jointly introduced the »TS4-F« power optimizer (photo) with rapid shutdown technology as a complement to Tigo’s »TS4« platform. A »TS4-R-F« version for retrofit installation was distributed by SMA.
At that time, SMA was also a shareholder in Tigo, holding 27 percent of the company since a capital increase carried out in April 2016. These shares were sold again in July 2020. SMA has not yet published a statement on the lawsuit.

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