This folder contains correspondence and other documents concerning legal cases involving Edison or companies in which he had an interest. Included are documents pertaining to Thomas A. Edison and North American Portland Cement Co. v. Alsen's American Portland Cement Works , an infringement case involving Edison's long-kiln patent, and Edison Manufacturing Co. v. Banks Electric and Manufacturing Co. , an infringement case pertaining to Edison's primary battery patents. Also included is a motion to strike an antitrust defense in Motion Picture Patents Co. v. Societe Francaise des Films et Cinematographes (the Eclair Film Co.), along with correspondence regarding the Bates Manufacturing Co. and the protection of its trademark on hand-held numbering machines. In addition, there are letters by attorney Frederick J. Stone of New York pertaining to George Harrington, Josiah C. Reiff, and Thomas A. Edison v. Atlantic and Pacific Telegraph Co. et al.—a longstanding case arising from Edison's work on automatic telegraphy during the 1870s that was finally resolved in 1913 when the U.S. Supreme Court dismissed Edison's appeal.

All of the documents have been selected except for letters of transmittal and a few routine items concerning legal fees.