You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Doctor_Who

Context:
The image of the TARDIS has become firmly linked to the show in the public's consciousness; BBC scriptwriter Anthony Coburn, who lived in the resort of Herne Bay, Kent, was one of the people who conceived the idea of a police box as a time machine. In 1996, the BBC applied for a trade mark to use the TARDIS' blue police box design in merchandising associated with Doctor Who. In 1998, the Metropolitan Police Authority filed an objection to the trade mark claim; but in 2002, the Patent Office ruled in favour of the BBC.

Question:
When did the BBC receive a favorable ruling on the trade mark claim?

2002