This folder contains correspondence and other documents relating to foreign and domestic patent applications, patent litigation, and other patent matters. Most of the material consists of letters to Edison from the law firm of Dyer, Edmonds & Dyer and correspondence from parties in Europe concerning storage battery patents. Included is evidence of Edison's effort to block the American Graphophone Co. from obtaining patents in Germany.

Approximately 30 percent of the documents have been selected. The following items have not been selected: routine correspondence about application fees or patent renewals; receipts; certificates of registration; letters of transmittal; reports concerning the subdivision of German patent applications; and documents that duplicate information in selected material.