I have created a product and would like to patent it and start selling it on my own country as well internationally but I wanna find out if someone already patented my idea?
A search for prior art can be conducted on the internet using search engines. This strategy may uncover some data, but will not always uncover very relevant data.
If you think that you own any idea in your mind and you implemented it then before implementation you should check online and offline that someone or somebody already implemented or used that idea and for this you can use the following links:
1: gov.uk
2: uspto.gov
3: copyrightservice.gov.uk