Maarten & De Kooning (M&DK Law Firm)

Maarten & De Kooning (M&DK) is a Madrid law firm founded in 2010 that specialises in immigration and international mobility for investors, companies and individuals. The firm also advises on tax, corporate matters, business support and real estate for both resident and non-resident clients. ([maartenkooning.com](https://www.maartenkooning.com/?utm_source=openai))

M&DK says it acts for clients from around the world and works with a network of local and international partner firms. The firm’s published address and contact email are on its privacy page. ([maartenkooning.com](https://www.maartenkooning.com/?utm_source=openai))

The website describes client service and engagement as a tailored process: contact the firm to explain your case, the lawyers assess your needs and propose solutions, and the firm represents you through application, negotiation and completion, working with its network of partners where needed. (Contact and client‑service information are given on the site; the firm does not publish detailed fixed steps or fees.) ([maartenkooning.com](https://www.maartenkooning.com/?utm_source=openai))