And did LFL present any facts pertaining to the stormtrooper design being artistic or industrial ?
It's copyright protected and thus aesthetic or artistic, the US won't grant copyright protection to utilitarian designs unless they have aesthetic features that separate them from generic utilitarian designs and thus making them aesthetic and granted copyright protection as aesthetic designs... If it was pure utilitarian it would only be eligible for patent protections, once it's granted copyright protection it's considered an aesthetic design...
Copyright protection was enforced in the US judgment against AA, thus the design is copyright protected or an aesthetic design in the US as far as the courts are concerned...
Of important note in the US...
Chosun Int’l, Inc. v. Chrisha Creations, Ltd., 413 F.3d 324 (2nd Cir. 2005)
Read the above conclusion on appeal... Costumes are granted Copyright protected in the US, because they not only serve a utilitarian purpose of 'covering the body' but have a separable aesthetic function of portraying an appearance...
"A costume's utility is in allowing the wearer to pretend to be something else--often a caricature of something else--and it is the artistic choices made in designing the costume that determine its saleability. It is impossible to say whether the utilitarian predominates over the artistic, or vice versa."
"It is at least possible that elements of Chosun's plush sculpted animal costumes are separable from the overall design of the costume, and hence eligible for protection under the Copyright Act. It might, for example, be the case that the sculpted "heads" of these designs are physically separable from the overall costume, in that they could be removed from the costume without adversely impacting the wearer's ability to cover his or her body."
"Similarly, it could be that the sculpted "heads" (and perhaps "hands") are conceptually separable. That is, Chosun may be able to show that they invoke in the viewer a concept separate from that of the costume's "clothing" function, and that their addition to the costume was not motivated by a desire to enhance the costume's functionality qua clothing."
Other cases that are noteworthy...
Mazerv. Stein, 347 U.S. at 218. “We find nothing in the copyright statute to support the argument that the intended use or use in industry of an article eligible for copyright bars or invalidates its registration.”
Nimmer on Copyright§ 2.08(B) at 2-101. “Conceptual separability exists where there is any substantial likelihood that even if the article had no utilitarian use, it would still be marketable to some significant segment of the community simply because of its aesthetic qualities.”
Pivot Point Int’l, Inc. v. Charlene Prods., Inc., 372 F.3d 913 (7th Cir. 2004)
Superior Form Builders, Inc. v. Dan Chase Taxidermy Supply Co., Inc., 74 F.3d 488 (4th Cir. 1996)