[keenrodent]

As a business owner not a lawyer my response to this kind of thing is always to consult my lawyer. The question isn't necessarily "does it infringe" but rather "how best to proceed," and it will take an actual conversation between you and your lawyer to figure that out together.

If'n you don't have a lawyer, asking others if they know somebody who does "startup stuff" is a good way to dig up recommendations for the kind of help you'll need, which you do need now and will likely need in the future.