Finding similarity between "VEUVE ROYALE" and "VEUVE CLICQUOT" because "VEUVE ... remains a ‘prominent feature’ as the first word in the mark and the first word to appear on the label"
Finding a “real interest” in a mark's registration can be shown “without proprietary rights in the mark or without asserting that it has a right or has an interest in using the alleged mark”
Stating that "[a]s to strength of a mark . . . [third-party] registration evidence may not be given any weight . . . [because they are] not evidence of what happens in the market place"