The Patent Trial and Appeal Board said that challenged claims of Tigo Energy Inc.'s patent that discloses a power supply for use in a solar electric production system aren’t unpatentable as anticipated by or obvious over prior art, in an inter partes review by SMA Solar Technology America LLC. The board determined that the challenged claims aren‘t anticipated by or obvious over various combinations of prior art, including prior art that discusses problems with start-up operation when insufficient sunlight reaches the solar generator, that discloses a unique power supply architecture with cascaded converters for large input-to-output step-down ratio, and that ...
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