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Use our simple European Patent Cost Calculator to obtain a quote and to order your European patent filing.
How long does an international PCT patent application last for?
In most countries, 30 months from the earliest priority date. Some jurisdictions, eg. Europe and the UK, provide 31 months.
You can avoid large extra official fees when filing your US patent application by changing any multiple dependency claims to single dependency, so that your later claims only depend back to one previous claim.
By also limiting your claims to no more than three independent claims and to no more than twenty claims altogether, extra official fees will also be avoided.