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So if there is no patent, only a publication number how do I tell if they were ever granted a patent or if they were, where is it? I'm looking at publication # EP2526617.

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According to the EPO website, this patent application has been published and is pending examination.

Since it looks like priorty is claimed to a US filing, a search on the US Patent Office website seems to confirm that a US patent has not issued for this application.

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