This thesis analyses the legal consequences of subsequent patent invalidation on infringement actions, contracts and warning letters.Patent invalidation has a retroactive effect. The revoked patent should be treated as has never exist while it was used against third parties. There is a certain...

We study the determinants of patent suits and their outcomes over the period 1978-1999 by linking detailed information from the U.S. patent office, the federal court system, and industry sources. The probability of being involved in a suit is very heterogeneous, being much higher for valuable...

As a result of external pressures and to meet its own economic objectives, China has been moving its intellectual property rights (IPR) regime closer to those found in many more developed nations. As China's economy grows, its transition from manufacturing-based to knowledge-based production,...

We study the determinants of patent suits and their outcomes over the period 1978-1999 by linking detailed information from the U.S. patent office, the federal court system, and industry sources. The probability of being involved in a suit is very heterogeneous, being much higher for valuable...

This paper describes a data set built to analyze patent litigation in the United States during 1929-2006. The data include all patents in published district court and appellate court decisions in which validity and/or infringement are at issue. We collect numerous patent-specific variables and...

In the widely publicized campaign to curb purported “patent troll” litigation abuses, there are many anecdotal stories on non-practicing entities’ (“NPE”) alleged abusive patent assertions. In view of the paucity of accurate accounts of the real stories behind these “patent troll”...