History of the board game Monopoly game's history, and argued that the copyrights and trademarks held by Parker Brothers should be nullified, as the game came out of the public domain. Among other things, Anspach discovered the empty 1933 Charles B. Darrow file at the United States Copyright Office, testimony from the "Inflation" game case that was settled out of court, and letters from Knapp Electric challenging Parker Brothers over "Monopoly". As the case went to trial in November 1976, Anspach produced testimony by many involved with the early development of the game, including Catherine and Willard Allphin, Dorothea Raiford and Charles Todd. Willard Allphin attempted
Parker Brothers subsidiary Kenner; this new company, Kenner Parker Toys Inc., was acquired by Tonka in 1987. Tonka, including Parker Brothers, was bought in 1991 for about $516 million by Hasbro which also owned the Milton Bradley Company. Following the acquisition, Parker Brothers continued to have its corporate offices in Beverly, but production of the games were moved to Milton Bradley's headquarters in East Longmeadow. In 1998, Parker Brothers and Milton Bradley were consolidated at the new Hasbro Games campus (based in Parker Brother's former headquarters). Parker Brothers Parker Brothers was an American toy and game manufacturer which later became a brand