With the continuous progress of science and technology, the means of patent infringement are becoming more and more covert. At present, in some patent infringement cases, it often happens that some illegal manufacturers sell parts and components that infringe others’ patented products to consumers and the consumers assemble these parts and components into infringing products. There are 3 common cases as follow:
1. Manufacturers produce parts and components of the patented products and sell them to consumers who will finally assemble the parts according to the corresponding specification provided by the manufacturers with detailed installation and function instructions.
2. Manufacturers do not provide all the parts and components of the patented products to consumers. However, it is fully hinted in the specification that to perform the product’s function, an additional specific
part needs to be equipped.

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