Honeywell versus Sperry Rand was one of the longest cases in the history of the federal courts within the United States. It spanned almost five years and resulted in the invalidation of certain patents. Atanasoff had worked out the fundamental elements of an electronic digital computer. His machine, built at Iowa State University, featured a base-two operational mode, regenerative memory, and logic circuits as early as 1939. (Excerpt- Profitable Intelligence)
Explore the Iowa State University Archive: https://jva.cs.iastate.edu/courtcase.php