“State Department bans Courier New 12, except for treaties”. AIGA. 2018年12月27日閲覧。 “Adrian Frutiger had nothing to do with the design, though IBM hired him in the late 1960s to design a version of his Univers typeface for the Selectric.”
Bigelow, Charles (1986). “Notes on Typeface Protection”. TUGboat7 (3): 146–151. https://www.tug.org/TUGboat/tb07-3/tb16bigelow.pdf2018年12月27日閲覧. "IBM neglected to trademark the typeface names like Courier and Prestige, so once the patents had lapsed, the names gradually fell into the public domain without IBM doing anything about it (at the time, and for a dozen years or so, IBM was distracted by a major U.S. anti-trust suit). Most students of the type protection field believe that those names are probably unprotectable by now, though IBM could still presumably make a try for it if sufficiently motivated."
Bigelow, Charles (1986). “Notes on Typeface Protection”. TUGboat7 (3): 146–151. https://www.tug.org/TUGboat/tb07-3/tb16bigelow.pdf2018年12月27日閲覧. "IBM neglected to trademark the typeface names like Courier and Prestige, so once the patents had lapsed, the names gradually fell into the public domain without IBM doing anything about it (at the time, and for a dozen years or so, IBM was distracted by a major U.S. anti-trust suit). Most students of the type protection field believe that those names are probably unprotectable by now, though IBM could still presumably make a try for it if sufficiently motivated."
