entitled to $100 per month for the life of the patent. Despite this consideration, the court implied a reasonable efforts clause to maximize revenue based on the intent of the parties. Id. at 19. PerkinElmer also attempts to distinguish Eno as limited to exclusive licensing arrangements. PerkinElmer asserts that the implied reasonable efforts duty is inapplicable here because it “did not obtain an exclusive license but rather purchased Sonoran’s assets.” The district court found this argument compelling. We do not because Massachusetts law is to the contrary. The fact that Eno involved exclusive licensing arrangements does not lessen the obligation to use reasonable efforts in other situations. See, e.g., Brightwater Paper Co. v. Monadnock Paper Mills, 161 F.2d 869, 871 (1st Cir.1947) (<HOLDING>); Russo v. Enter. Realty Co., 347 Mass. 655,
holding that the plaintiff had an implied duty to use reasonable efforts to elicit particular business and to hand it over to the defendant recognizing implied duty to market recognizing implied obligation to use reasonable diligence recognizing implied duty to produce and market holding that a contract for an exclusive agency to market a product contains an implied promise to use all reasonable efforts to market the product