In a lot of countries copyright ends 70 years after the death of the creators of the work, so Steamboat Willie won’t become public domain until after 2041 (70 years after the death of Ub Iwerks). So if you use the characters from Steamboat Willie, you might run into problems if your comic is syndicated internationally.
In a lot of countries copyright ends 70 years after the death of the creators of the work, so Steamboat Willie won’t become public domain until after 2041 (70 years after the death of Ub Iwerks). So if you use the characters from Steamboat Willie, you might run into problems if your comic is syndicated internationally.