In re Campbell

How later courts describe this case

• "district court applied an erroneous legal standard in finding no likelihood of confusion, thereby stripping that determination of the protection normally accorded fact findings"
• “particular hues of [] colors, arranged in certain geometric designs, presented in conjunction with a particular style of printing,” taken together, create distinctive visual impression
• clearly erroneous standard of review inapplicable to finding of no likelihood of confusion in trademark case where trial court “misapplied one critical legal standard” in making subsidiary fact determination