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This civil action asserts claims for relief for trademark infringement, trade dress infringement, and unfair competition, which arise under the trademark laws of the United States, 15 U.S.C. § 1051, et seq.
aspetto caratteristico del/che contraddistingue il prodotto (o il marchio)
Explanation: Ho avuto lo stesso problema qualche mese fa. Credo ci sia una differenza tra trademark e trade dress.
Dopo rapida ricerca ho trovato un sito www.tomwbell.com/writings/FullVTD.html
che riporta quanto segue:
I. Trademark vs. Trade Dress
Although often treated as a subcategory of trademark law, trade dress in fact represents a unique sort of intellectual property. The Supreme Court has defined trade dress as the "'total image and overall appearance'" of a good,  further specifying that it "'may include features such as size, shape, color or color combinations, texture, graphics, or even particular sales techniques.'"  Trade dress thus encompasses a more diffuse set of intellectual properties than does trademark law.
Spero sia utile!
cleobella Italy Local time: 22:37 Native speaker of: Italian PRO pts in pair: 201