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• Patent Retriever (Download copies of US, European and PCT patent applications as PDF files)
• Google Patent Search (UPSTO)
• http://www.pat2pdf.org (UPSTO)
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Vyhledávání:

• Obecně:
• Scirus Advanced Search (UPSTO a esp@cenet)
• Google Patent Search (UPSTO)
• Volně přístupné patentové databáze:
• Biological Innovation for Open Society - BIOS
• Canadian Patents Database
• Czech patents 
• European and World Patents - esp@cenet
• French Patent Office - inpi
• German Patent and Trade Mark Office - DEPATISnet
• Indian Patent Office - IPAIRS 
• Japan Patent Office - IPDL
• Polish Patent Office's Publication Server 
• USPTO Patent Database

• Patenty (NTK)

• Normy (NTK)