Unjust Enrichment Claims Based on “Use of Another’s Advertising Idea” Were Not used in Insured’s ‘Advertisement’ ” In Maryland Cas. Co. v. Blackstone Int’l Ltd., No. 51, September Term, 2014, 2015 Md. LEXIS 286 (Md. Apr. 21, 2015), the Maryland Court of Appeals failed to address the salient policy language concluding that no potential coverage arose for “unjust…