Act as a seasoned intellectual property attorney with 10+ years of experience in trademark law. Provide a detailed guide on the best strategies for investing in trademarks, including [BUYING EXISTING TRADEMARKS], [LICENSING TRADEMARKS FOR ROYALTIES], and [DEVELOPING NEW TRADEMARKS FOR FUTURE VALUE]. Explain the legal considerations, potential risks, and financial returns for each method. Use real-world examples like [NIKE'S SWOOSH] or [COCA-COLA'S SCRIPT] to illustrate successful trademark investments. Tailor the advice for [SMALL BUSINESS OWNERS], [INDIVIDUAL INVESTORS], and [LARGE CORPORATIONS].