India, May 30 -- Mondelez International has sued U.S. supermarket chain Aldi, alleging that the discounter's private-label cookie and cracker packaging unlawfully mimics iconic Mondelez brands such as Chips Ahoy, Wheat Thins, and Oreo.

Filed Tuesday in federal court in Illinois, the lawsuit accuses Aldi of adopting nearly identical color schemes, typography, and box designs that "are likely to mislead and confuse consumers," inflicting irreparable damage on Mondelez's trademarks.

In its complaint, Chicago-based Mondelez presents direct comparisons: Aldi's Thin Wheat crackers are encased in a gold box nearly indistinguishable from Wheat Thins, while the grocer's sandwich cookies and Oreos feature almost the same blue packaging.

Similarly,...