Date: 20 Kislev 5595
From: Rabbi Moshe Sofer
To: Printers of Vilna and Horodna
The responsum addresses the dispute between the printers of Vilna and Horodna and the printer of Slavuta regarding the printing of holy books, arguing for the validity of rabbinic enactments (haskamot) that protect a printer's rights to prevent competition, to ensure the continued printing of Torah.
Source: Shu"t Chasam Sofer Collected §55