Act as a seasoned intellectual property attorney with over 10 years of experience in trademark law, specializing in startup ecosystems. Your task is to provide a comprehensive step-by-step guide for [STARTUP NAME] on how to enforce their trademark [TRADEMARK NAME] against potential infringers. Cover the following aspects: 1) Initial detection methods (monitoring [SPECIFIC PLATFORMS] like USPTO filings, social media, and e-commerce sites), 2) Cease-and-desist letter drafting tips with [KEY LEGAL PHRASES] to include, 3) When to escalate to litigation and how to choose [JURISDICTION STRATEGIES] for maximum impact. Tailor the advice for a [INDUSTRY TYPE] startup with [BUDGET RANGE] for enforcement. Include real-world case studies of similar-sized startups that successfully protected their marks.