A more thorough explanation:

Definition: Patent watch is a system that continuously monitors published patent applications and granted patents in a specific field of science or technology. Its purpose is to detect or prevent infringements.

Example: Let's say a company has developed a new type of smartphone with unique features. To protect their invention, they file a patent application with the relevant authorities. However, there may be other companies or individuals who try to copy or steal their idea. To prevent this, the company can use a patent watch system to monitor any new patent applications or granted patents related to smartphones. If they find any potential infringements, they can take legal action to protect their intellectual property.

Another example: A pharmaceutical company develops a new drug that can cure a specific disease. They file a patent application to protect their invention. However, there may be other companies that try to create a similar drug or use the same formula without permission. To prevent this, the pharmaceutical company can use a patent watch system to monitor any new patent applications or granted patents related to their drug. If they find any potential infringements, they can take legal action to protect their intellectual property.

These examples illustrate how patent watch systems can help companies protect their inventions and prevent others from copying or stealing their ideas. By monitoring patent applications and granted patents, companies can detect potential infringements and take legal action to protect their intellectual property rights.