Free Multi-Country Trademark Gazette Search Engine
GazetteGobbler.com™ claims to be the world's only multi-country trademark gazette search engine. So far, it looks like they have only 303,797 recent trademark applications from Australia, United States, New Zealand, and the United Kingdom. But European Union CTM applications are reportedly coming soon.
Since the search engine is currently only a gazette service, trademarks will become available only when they have actually been advertised/published in the relevant gazette. Search results show the time remaining in opposition along with the owners and their addresses. Search queries can be limted by country, class, and goods and/or services. You can also search for exact matches, parts of words, and/or one word of a known trade mark. If the trademark you are searching is not in an opposition period in any country, marks that "sound the same" will be listed first come first.