Final answer:
Church & Dwight can pursue a trademark infringement lawsuit against the company selling Arm & Arm Deodorant to stop its sale. They need to show the similarity between the brands causes consumer confusion harming their brand. This legal action mirrors broader issues of market regulation and fair competition, as seen in other industry cases.
Step-by-step explanation:
Church & Dwight can potentially take legal action to prevent the other company from selling Arm & Arm Deodorant if it infringes on their trademark rights or causes consumer confusion. To do so, Church & Dwight must prove that their trademark has been registered, that the Arm & Arm mark is causing confusion among consumers due to its similarity, and that such confusion is damaging to their brand's reputation and sales. Trademark law protects brand names, logos, and other identifiers that distinguish goods and services from one another. Therefore, Church & Dwight should seek a trademark infringement lawsuit and obtain an injunction to stop the sale of the infringing deodorant.
The scenario with Church & Dwight parallels cases of price fixing and market manipulation by oligopolistic firms, such as the situation that arose with the top soap producers in France, as they secretly coordinated to control prices and stamp out competition. While the two situations involve different legal issues, they both underscore the importance of law in regulating market practices to ensure fair competition. It is within the legal framework that Church & Dwight can assert their rights and protect their market share from infringing competitors.