To apply for an international trademark registration certificate in Madrid, you need to follow the following steps:

1. Submit an application for international trademark registration: First, you need to submit an application for international trademark registration in the trademark office of your country or region. This country or region is called your "basic application country".

2. Select the member countries of Madrid Agreement: After submitting the basic application, you need to choose which member countries of Madrid Agreement you want to protect your trademark in. These countries will be your designated countries. You can choose one or more member countries.

3. Submit an application for international trademark registration to WIPO: Next, you need to submit an application for international trademark registration to the World Intellectual Property Organization (WIPO) through the Trademark Office in your country or region. WIPO will be responsible for processing your application and forwarding it to the trademark office of the designated country of your choice.

4. Trademark registration review and protection: Once your application for international trademark registration is forwarded to the trademark offices in designated countries, these trademark offices will review your trademark. If you don't encounter any problems, your trademark will be protected in every designated country.

5. Madrid international trademark registration certificate: once your trademark is registered and protected in a designated country, you can apply to WIPO for the Madrid international trademark registration certificate. This certificate will confirm that your trademark has been registered in the member countries of the Madrid Agreement.

please note that the specific application process may vary from country to country. It is suggested that you consult the local trademark office or professional intellectual property organization before applying for it to obtain accurate and up-to-date information.

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