When Vertical Aerospace unveiled its new aircraft in London in December, it was met by much fanfare from industry. The British electric vertical take-off-and-landing (eVTOL) aircraft company, chaired by aviation leasing veteran Dómhnal Slattery, was showing off Valo, the redesigned iteration of its electric aircraft that aims to take a slice of the fledgling air taxi market. But in the months since that flashy event, one of its chief rivals in the US has taken legal action against the company for alleged patent infringement in the Valo, striking a fresh broadside in the heated rivalry of eVTOL companies and the…

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