I wouldnt think you`d have to be worried about any copyright things..... its a word ! Only way it could be close to any copyright is if it was the same design as tracker boats has and you can see that it dont have the slant like theirs does. if thats the case the the company that came out with the first fish finder or depth finder would have claim to the other companies that use the same words, of course in todays time fish finder an depth finders are old news. its "Sonar" and "Scan" today!