Q: Hi, pl advise if these patents assigned to Sanuk USA D429555; D410137; D404894; 7234248 is applicable internationally?
A: These appear to be a set of three US design patents and one US utility patent. A United States patent is effective against people that make, use, sell, or offer to sell an infringing product in the US.
So a US patent can be used against a product made in China and imported into the US, or a product made in the US and exported into Canada. But a US patent cannot be used against a product made in China and exported to Canada.
That said, companies will often file the same patent idea in several countries. So it is possible that there are analogous patents in countries outside the US. A patent attorney can help you search. It may be most efficient to ask a patent attorney in the country of interest (China, Canada, or where ever).
I hope this helps.
Kevin E Flynn
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