A trademark is a symbol, word, or phrase that represents your brand, and registering it gives you exclusive rights to use it. It's like getting a special license to use your brand's name, logo, or slogan. This license is usually valid for a certain period, but don't worry, it's not a one-time thing - you can always renew it.
The initial registration period for a trademark is usually 10 years, but it can vary depending on the country and type of trademark. After that, you can renew it for another 10 years, and so on. It's like having a renewable energy source for your brand - it keeps going and going.