Is it reliable to apply for a utility model patent on Taobao? How much does it cost to apply for a patent from beginning to end?

Individuals applying for official fees in 75 yuan need someone to help you write technical documents about 300-600 yuan. Making your own application documents and submitting them to the Patent Office will not cost more than 800 yuan. If you find a professional organization with full authority, the cost will probably be 1600 yuan. What don't you understand? Hey, I-