Explaining that although the "Board is not required to discuss every piece of evidence," it cannot "disregard [evidence] without explanation" or "short-cut its consideration of the factual record before it"
Holding that 1–888–M–A–T–T–R–E–S–S “immediately conveys the impressions that a service relating to mattresses is available by calling the telephone number”
Finding that the TTAB did not err in determining that the term was generic, citing in part concerns arising from the methodology of the applicant's consumer survey
Holding that to determine whether trademark is generic, a court must determine the "principal significance of the word . . . its indication of the nature or class of an article, rather than an indication of its origin."