Quite correct. Although, to be even "more correct" [I can picture a few
of my past English teachers doing flip-flops in their graves at that
one] or to attempt greater assurance (choose your own description ;-))
it is the font programme as contained in the font file that is
copyright. I usually type 'copyright font file' or similar. This time,
laziness overtook me.

Some fonts are also covered by design patents.

Truly, the Legal status of font, font file, and other related matters is
confudes [sic] and confussing [sic]. This is especially true in the U.S.
of A.

All the best.

Tom