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okay in this video im going to talk about extracting characters from the end of a string in this case we have a small pizza patent data set from espacenet and we have a publication number and at the very end of this these publication numbers we have some brackets and a code thats known as the kind code now this kind code uh tells us what kind of patent document were dealing with so in the case of korea and kind code u its also the case in many other countries we have a utility model in the case of a1 we have the publication the first publication of a patent application im guessing that the a will be something similar for korea the same is true for the us and so on and so forth i have no idea what uh portugals kind code e means since it doesnt appear on our list i can find but this is really useful information and at a certain point we can actually start to work out whether we have a patent application or a patent grant so how do we actually extract this information now there are
