"The plaintiff doesn't have to prove negligence, but only has to prove [the defendant is] the owner and that the dog did the damage," says Dale P. Faulkner, of New London's Faulkner & Graves.

"The gun industry is not known for self-reflection," attorney Josh Koskoff said. "We do expect the insurance industry that underwrites the gun industry will require safer marketing practices."

Cigna seeks a declaration that the labs must return roughly $18 million.

A hospital alleged the virus 'physically altered and damaged' its facilities in a fight with the insurer for coverage.