trademark checker?

Is there any search engine through which I can find trademarks, whether they are available or not?

 

Direct Link:
http://tess2.uspto.gov/bin/gate.exe?f=searchss&state=4001:eldgbn.1.1

 

That only shows registered marks, not common law or foreign marks. You need to pay for a trademark search - which will run a few hundred dollars.

 

check us trademarks not enough. you have to search european trademarks as well.
The information here might help:

http://corpocrat.com/2007/07/31/how-to-do-a-free-trademark-search/
http://oami.eu.int/CTMOnline/RequestManager/en_SearchBasic