Japan, the United States and the European Union are planning to reinforce countermeasures against the illicit trade in counterfeit products in cooperation with online marketplace operators, sources familiar with the matter said Saturday. With the Organization for Economic Cooperation and Development playing a central role in the move, the like-minded partners will cooperate with online marketplace operators such as Amazon.com Inc. and Rakuten Group Inc. and aim to formulate guidelines in 2025 or later to prevent fake brand goods from being traded online. The economic impact of counterfeits has…