>Both parties are guilty here. Ars should put at the bottom of its article "IMAX is a trademark of <whatever the entity that owns it>" which acknowledges the IMAX trademark.
No, this is absolute bunk. There is no reason for this. At least in the US this is protected by Nominative Use, which guarantees that "a person may use the trademark of another as a reference to describe the other product, or to compare it to their own."
Further: "Nominative use does not require that ownership of the trademark be acknowledged, for example by use of a sentence such as "UNIX is a registered trademark of The Open Group"."
No, this is absolute bunk. There is no reason for this. At least in the US this is protected by Nominative Use, which guarantees that "a person may use the trademark of another as a reference to describe the other product, or to compare it to their own."
Further: "Nominative use does not require that ownership of the trademark be acknowledged, for example by use of a sentence such as "UNIX is a registered trademark of The Open Group"."
https://en.wikipedia.org/wiki/Nominative_use