1) The purposes of independent claims and dependent claims are different. An independent claim is a requirement to prevent others from infringing upon your rights. The dependent rights claim is to prevent you from infringing on the rights of others (or in other words, when you later find that your independent claim is not established), you can take a step back. Where can you retreat to the dependent rights claim? In other words, as long as your independent claim is established and valid, then none of your ten or eight dependent claims will be useful. Don't confuse these two purposes. 2) Therefore, you must find the most critical point from a large number of necessary connections and combinations, the key point that cannot be bypassed. Without this key point, the patent will not be implemented as an independent key point. claims. The fewer independent claims, the better, and the simpler and clearer the better, so that the scope of protection is the widest. On the contrary, the more independent claims are written and the more detailed they are, the narrower the scope of protection will be. 3) Others can be used as dependent claims. 4) If you think that your patented product has ten key points, and each key point cannot be ignored or bypassed. No matter which key point is bypassed, the patent cannot be implemented. Moreover, these ten key points have not been invented by predecessors and are all innovative. Then, you should apply for ten patents to protect this product. Each patent protects a key point, rather than trying to use one patent to protect it. Protect ten key points.