If you have a registered trademark, it is important to renew it in order to maintain your legal protection.

Here are some key points to keep in mind when it comes to trademark renewal:

1. Renewal period: In most countries, trademarks are initially registered for a period of 10 years. The renewal period can vary by country, but is typically for a period of 10 years as well. You should check the specific laws in your country to determine when your trademark is due for renewal.

2. Timing: It is important to renew your trademark in a timely manner. If you miss the renewal deadline, your trademark may be canceled or become vulnerable to infringement. You should start the renewal process well before the deadline to ensure that you have enough time to complete the necessary paperwork and pay any fees.

3. Required documents: The documents required for trademark renewal can vary by country, but typically include an application form, proof of use of the trademark, and payment of any renewal fees. In some cases, you may also need to submit additional documentation, such as evidence of the mark's continued distinctiveness.

4. Costs: There is usually a fee associated with trademark renewal, which can vary by country and by the number of classes of goods or services covered by your trademark. You should check the specific fees in your country and be prepared to pay them when submitting your renewal application.

5. Considerations for international trademarks: If you have registered your trademark in multiple countries, you may need to renew each registration separately. Additionally, some countries require proof of use of the trademark in that specific country in order to renew the registration.

Overall, trademark renewal is an important process to ensure that you continue to have legal protection for your brand. Be sure to understand the requirements and timing for renewal in your country, and be prepared to submit the necessary documents and fees on time.