There are already products with similar principles on the market, and some people have applied for invention patents. It has been published for 1 year, and the certificate has not been officially issu

There are already products with similar principles on the market, and some people have applied for invention patents. It has been published for 1 year, and the certificate has not been officially issued. How can I raise an objection? thank you Well, it depends. You mean, if there is such a product on the market, you shouldn't be able to get an invention patent? According to what you said, it depends on whether the application date of his invention patent is before the public use date or whether the products on the market are before the public use date. If the application date is before, the existing products on the market do not constitute existing technology, he can claim losses when obtaining the patent right; If the application date is late and the product is existing technology, but the examiner usually does not consider using disclosure and only looks at publications and patent documents, then you can provide relevant evidence of using disclosure to the Patent Office for the examiner's reference. If the authorization notice has been issued before the patent, you can also declare the invention patent invalid through the later invalidation procedure, depending on whether the evidence you provide is enough to invalidate the patent and whether the existing product is enough to destroy the novelty and creativity of the patent. It should probably be like this for your reference. If you want to know more carefully, you can ask more professionals.