Copyright requires more than just similarity, it requires actual copying. The burden is on the copyright own to prove that your designer has aware of the accusor's design. You first question is to ask your designer whether or not he know of the accusor's design. If he did not and the accusor's design is not so well known that the designer would have to have known of it, the accusor has no legitimate case and you should have your designer tell him so. Without seeing the two designs, it would be impossible for me to know whether or not one looks like a copy of the other. If your designer was aware of the accusor's design, you should ask him to re-design your logo without the similar parts and cover your expense in repackaging your product.
Answered on Mar 19th, 2015 at 12:10 PM