By that logic services like Hoogle (a haskell search engine) are even more likely to cause confusion with other services in the same arena (search). Yet, Google hasn't barked.
I just can't see a scenario in which a person is told about Moz, seeks them out, stumbles upon Doz, and thinks they found what they were looking for. The services may be complementary and even overlap on occasion, but even to a user in a hurry it should be painfully obvious they are not the same thing.
I don't think hamming distance provides a solid legal footing for arguing conflation of trademarks. Their phonetic difference is pretty large. The legal standard is generally based on an idiot in a hurry and I think the differences are large enough than even the biggest moron with no patience will know they are different.
I just can't see a scenario in which a person is told about Moz, seeks them out, stumbles upon Doz, and thinks they found what they were looking for. The services may be complementary and even overlap on occasion, but even to a user in a hurry it should be painfully obvious they are not the same thing.
I don't think hamming distance provides a solid legal footing for arguing conflation of trademarks. Their phonetic difference is pretty large. The legal standard is generally based on an idiot in a hurry and I think the differences are large enough than even the biggest moron with no patience will know they are different.