According to the doctrine of equivalents, even when an accused invention includes a modified element in contrast with the elements in the patented claim, if they are practically equivalent, the accused invention infringes the patented invention. Despite court rulings which make it possible for patents to be protected according to the real value of the invention, there is arguably increased uncertainty about the possibility for equivalent infringement.
This article compares the patent registration rates by technology field in South Korea with the other IP5 jurisdictions (ie, the United States Patent and Trademark Office, the European Patent Office, the Japan Patent Office and the State Intellectual Property Office of the People's Republic of China) and also looks at the systems which may be used to establish a patent portfolio, with a comparison with the United States in particular.
In South Korea, the low amount of damages awarded by the courts in patent infringement cases has long been criticised. To address this, a treble damages system (implemented in July 2019) and an improved method for calculating the amount of damages (to be implemented on 10 December 2020) have been introduced. This article looks at these changes in detail, as well as a proposed law revision to improve evidence collection.