On behalf of a company he works for, a family friend has asked me to add a commemorative slogan onto the bottom of their original logo. They don't want me to alter the logo in any way, just add the slogan.
I was just wondering if this was ok to do, as I am not changing or updating any of the original designers work for this company's logo, just adding on something to sit underneath it.
Thanks for any help!
On behalf of a company he works for
The copyright holder is free to request anyone to make changes to the work they own.
Think of the copyright like a house. As the homeowner you can request anyone paint your house. There's nothing wrong with that. But a neighbor can't hire someone to paint your house without your permission.
While not impossible, it would be exceptionally rare that a company does not own the copyright to their own logo.
As long as it is not an alteration to the logo, you should be okay. In your question though, you say, "onto the bottom of the original logo." as if it were a square or rectangle you are adding it on to. And, in that case, the answer is no. Then it would change the original integrity of the logo design, making it a logo modification. An updated tag line is generally no interference to the logo design.
