chick-fil-a-chicken sandwichShake Shack is considering the launch of a Chick-fil-A rival, according to a company filing. The burger chain's subsidiary, SSE IP, filed an application to trademark the name "chicken shack."

That could mean the company is testing a chicken sandwich or a new chain with a chicken-based menu.

Shake Shack hasn't revealed any details of its plans.. . . more