The Delaware Supreme Court on Monday upheld a Delaware Court of Chancery ruling that found Sprint Corp.’s $3.6 billion acquisition of telecommunications firm Clearwire Corp. in 2013 had valued Clearwire at more than twice what it was actually worth.

A full panel of the high court signed off on Vice Chancellor J. Travis Laster’s decision last July, which dealt a loss to Clearwire investor Aurelius Capital Management.