When evaluating an application for Lever-rule protection against gray market articles in accordance with 19 CFR 133.2(e), which of the following is NOT a physical and material difference that CBP may consider between articles authorized for importation or sale in the United States and those not so authorized?
How to get there
Lever-rule protection lets a U.S. trademark owner block genuine foreign-market goods ("gray market") that are physically and materially different from the U.S. versions. The regulation lists what CBP may consider:
(1) The specific composition of both the authorized and gray market product(s) (including chemical composition);
(2) Formulation, product construction, structure, or composite product components …;
(3) Performance and/or operational characteristics …;
(4) Differences resulting from legal or regulatory requirements, certification, etc.;
(5) Other distinguishing and explicitly defined factors that would likely result in consumer deception or confusion …
Options A, B and D are lifted straight from (4), (2) and (3). Retail price isn't a physical or material characteristic of the product at all. The answer is C.
Why the other choices are wrong
Source: 19 CFR 133.2(e)–(f) (eCFR); Lever Bros. Co. v. United States, 981 F.2d 1330 (D.C. Cir. 1993).