First, you can ensure that your products do not infringe the patent rights of others, avoid infringement lawsuits and demand compensation.
Second: after applying for a patent for one's own product, others cannot manufacture, sell or import the same product. You can monopolize the market for this product. If you find others copying your products, you can sue them and demand compensation.
Third: you have a patent right. You can license others to produce your products and charge a license fee.
There are many knockoffs in China, and the products sold well are easy to be copied. If there is no patent right, you can only let others copy it without permission, and you can't protect your intellectual labor. Many bosses I have met are very patent-conscious, and they have to apply for patents before launching new products.
Disadvantages:
It costs a little money to apply for a patent, and the annual fee is quite high when there are many patents. If you are not good at using patents, there may be a little pressure on enterprises with insufficient funds.
However, the advantages outweigh the disadvantages.
I hope it helps you. If you don't understand, you can ask me questions.