This folder contains correspondence and other documents relating to foreign and domestic patent applications, patent litigation, and other patent matters. Among the items for 1908 are documents concerning foreign storage battery and cement patents, patents on the use of montan wax in phonograph cylinders, and the investigation of patents by experimenters other than Edison. Most of the letters are to or from Frank L. Dyer, general counsel of the Legal Department and (after July) president and general counsel of the National Phonograph Co.

Approximately 40 percent of the documents have been selected. The items not selected include letters of inquiry, receipts, routine correspondence concerning patent attorneys and standing accounts, and items that duplicate information in selected material.