The USPTO cites an existing trademark which is too similar to "Airachnid":
USPTO wrote:Registration of the applied-for mark is refused because of a likelihood of confusion with the mark in U.S. Registration No. 2917921.
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Applicant’s mark, AIRACHNID, is highly similar to registrant’s mark, ARACHNOID. The marks are both intended to be plays on the word “arachnid,” and as such, are highly similar in impression. Additionally, the first portion of the marks, “AIRACHN” and “ARACHN” are nearly identical in sound and appearance, and the final portion “NID” and “NOID” is also highly similar. Note that slight differences in the sound of similar marks will not avoid a likelihood of confusion.
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The highly similar wording raises the likelihood that a consumer may believe applicant’s goods to be related to registrant’s goods, and ultimately from the same source.
To see the full body of the Trademark application and the decision, search here and enter Serial Number 77892423. Review the document labeled "Offc Action Outgoing". You can also see this document here.
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