Here is a great article in the New York Times about branding, reviving dead brands (think Volkswagen Beetle), and consumer memory. Here they’re talking about Brim Coffee:

This brings us to Earle’s ideas about the potential upside of faulty consumer memory. Maybe, for instance, you’re among those who remember Brim. But do you also remember that it was a decaf-only brand? That’s actually why you could “fill it to the rim.” River West’s research found that many who recall the Brim brand have forgotten the decaf detail.
. . .
Earle says that this imperfection of memory can be used to enhance whatever new Brim he comes up with. This is “a benefit of dormancy,” he says. The brand equity has value on its own, but it can be grafted onto something newer and, perhaps, more innovative. “Consumers remember the kind of high-level essence of the brand,” he says. “They tend to forget the product specifics.” This, he figures, creates an opening: it gives the reintroduced version “permission” to forget that decaf-only limitation as well and morph into a full line of coffee varieties. “ ‘Fill it to the rim with Brim’ stands for full-flavored coffee,” Earle says, with a chuckle. “Fill it to the rim — it’s great stuff!”

I remember the “Fill it to the Rim with Brim” campaign, but I’d forgotten the decaf angle. Interesting! It’s a fascinating article.