When Duracell filed suit against Energizer alleging that Energizer falsely claimed its “Energizer MAX lasts 10% longer than Duracell Power Boost,” the case seemed like just another round in the long-running rivalry between the Copper Top and the Energizer Bunny. But the lawsuit demonstrates that even the strongest brands in parity categories struggle to remain… Continue reading When the Bunny Fights the Copper Top: How Iconic Battery Brands Try to Manufacture Difference In a Commodity Category