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Where can I search for whether I can or cannot use the name "Connect 4" or "Connect four" for my game?

  • Google it and check if the site in your country has Connect 4(tm) – Terry Nov 2 '15 at 14:24
  • my country? I'd like to put it in all mobile stores + additionally on website. So assume it counts where the server is, right? What about mobile stores? – Anna Long Nov 3 '15 at 1:10
  • You would need to check the laws of where ever you are selling it to. – Terry Nov 3 '15 at 8:38
  • @Terry seriously? Besides few countries like North Korea, AppStore works in every country. – Anna Long Nov 3 '15 at 10:07
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    I think you have made an assumption which isn't quite true. Some apps are only available in certain countries due to copyright/trademarks etc.. I'll find you a reference later on. – Terry Nov 3 '15 at 10:14
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In the United States you can search trademarks at the U.S. Patent and Trademark Office (USPTO) website.

http://www.uspto.gov/trademarks-application-process/search-trademark-database

  • What about mobile stores? Should it be free in US Patent and Trademark Office? What about website, is it important where my host is registered? – Anna Long Nov 3 '15 at 1:13
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In the UK you can use the Intellectual Property Office's website to search for trademarks.

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