A critical ruling gave Chevron the go-ahead for a $53 billion acquisition of Hess, access to one of the biggest oil finds of the decade, and a big win

Chevron will proceed with its $53 billion acquisition of Hess, after it prevailed in a landmark legal battle against larger rival Exxon Mobil to gain access to the largest oil discovery in decades.

Chevron closed its $55 billion acquisition of Hess on Friday after winning a landmark legal battle against larger rival Exxon Mobil to gain access to the largest oil discovery in decades.