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 his attorneys. There are also some items pertaining to the dissolution of the firm of Dyer, Edmonds & Dyer and the formation of the partnership of Dyer & Dyer.

Approximately 40 percent of the documents have been selected. The following categories have not been selected: routine correspondence about application fees and patent renewals; receipts; letters of transmittal; and documents that duplicate information in selected material.