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It can take years. In fact, at times it may take the USPTO the better part of a year to simply acknowledge having received the mail, which is why professionals file online to obtain an instantaneous receipt and filing date.

Within the second year, a patent would be scheduled for search and examination, which almost always results in rejections and objections based upon prior art and technical formalities. After these are dealt with over six months to a year more have passed, and then the amended application may be issued as a patent, upon payment of the necessary fees.

There are a few types of patent that can be "expedited" for an additional fee, and some other types of patents that can linger in the patent office for several more years before being approved for issuance.

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12y ago

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