Patent infringement typically refers to the unauthorized use of patented technology, which violates the legal rights of the patent holder. Specifically, the elements and considerations for determining patent infringement include the following aspects:
- Existence of an effective patent right
* First, the patent holder must have a valid and effective patent right. This is usually granted by the patent office for an invention, utility model, or design patent within its effective period.
* The scope of the patent is defined by the “claims” in the patent document, meaning the technical domain protected by the patent must be clearly defined.
- Unauthorized implementation behavior
* The defendant’s behavior must meet the criteria of “implementation” specified in patent law, including manufacturing, use, offering for sale, selling, importing, etc.
* For example, if a company manufactures or sells a patented product without obtaining authorization from the patent holder, it constitutes an “implementation” act.
- The principle of comprehensive coverage of technical features
* The defendant’s technical solution or product must “comprehensively cover” all the technical features in the patent claims.
* If the defendant’s technical solution includes all the technical features of the patent or equivalent technical features, it is considered an infringement. This is known as the “comprehensive coverage principle” or the “doctrine of equivalents.”
- Direct infringement and indirect infringement
* Direct infringement: Refers to the defendant directly implementing the technical solution in the patent, thus infringing on the patent’s scope of protection.
* Indirect infringement: Refers to the defendant providing manufacturing equipment, technical support, or other means to help others implement the patent. Although the defendant does not directly infringe, their actions contribute to or assist in the infringement.
- No valid defense
* If the defendant can prove a reasonable defense, such as prior art defense or patent invalidity, they may be exempt from liability.
* Prior art defense: If the defendant can prove that the technology was publicly disclosed before the patent application date, they may argue that the technology is in the public domain and not an infringement.
* Exhaustion of rights defense: If the patented product is sold for the first time with the patent holder’s permission, subsequent sales or use of that product may not constitute infringement.
Common patent infringement behaviors
* Plagiarism production: Manufacturing and selling products based entirely on patented technology.
* Partial imitation: A product that partially covers the patented technology; even if not identical, it may still constitute infringement.
* Providing components: Providing key components of a patented product to others, enabling them to manufacture infringing products.
Exceptions to patent infringement
* Private and non-commercial use: If the use is solely for personal research and not for commercial purposes, it generally does not constitute infringement.
* Experimental and research use: Using patented technology for non-commercial research or experimentation may sometimes be exempt from infringement.
* Prior use rights: A person who has legally implemented the technology before the patent application date may have the right to continue using it.
Legal consequences of patent infringement
The patent holder can file a lawsuit with administrative authorities or the court to demand cessation of the infringement, compensation for damages, or other remedies. The court may order the infringer to stop the infringement, destroy the products or manufacturing equipment, and even compensate the patent holder for economic losses.