Patent infringement in the context of "Patents"

A patent is a type of intellectual property that gives its owner the legal right to exclude others from making, using, or selling an invention for a limited period of time in exchange for publishing an enabling disclosure of the invention. In most countries, patent rights fall under private law and the patent holder must sue someone infringing the patent in order to enforce their rights.

The procedure for granting patents, requirements placed on the patentee, and the extent of the exclusive rights vary widely between countries according to national laws and international agreements. Typically, however, a patent application must include one or more claims that define the scope of protection that is being sought. A patent may include many claims, each of which defines a specific property right.

The Unified Patent Court (UPC) is a common supranational patent court of 18 member states of the European Union, which opened on 1 June 2023. It hears cases regarding infringement and revocation proceedings of European patents (regular European patents unless they were opted out and unitary patents). A single court ruling is directly applicable in the member states that have ratified the UPC Agreement (UPCA).

The UPCA is the legal basis for the court. It was signed as an intergovernmental treaty in February 2013 by 25 states, all then-EU member states except Spain, Poland and Croatia. The UPC entered into force after meeting three predefined conditions on 1 June 2023. Provisional application of the UPC Agreement was triggered on 19 January 2022 to enable preparation for the proper functioning of the court after entry into force. While the United Kingdom originally ratified the agreement, it withdrew from the UPC in 2020, following Brexit.

In a patent or patent application, the claims define in technical terms the extent, i.e. the scope, of the protection conferred by a patent, or the protection sought in a patent application. The claims particularly point out the subject matter which the inventor(s) regard as their invention. In other words, the purpose of the claims is to define which subject matter is protected by the patent (or sought to be protected by the patent application). This is termed as the "notice function" of a patent claim—to warn others of what they must not do if they are to avoid infringement liability. The claims are of paramount importance in both prosecution and litigation.