In
the course of working on my own project on the topic of wrongful patent
assertion, I only recently came across this newly-published book by Dr. Minyu Zheng,
titled Legal Responses to Unjustified Threats of Patent Infringement:  Intellectual Property Approach or Unfair
Competition Approach? (Elgar Intellectual Property and Global Development
series, 2024).  Here is the book description:

In this incisive book, Minyu Zheng
examines the various legal responses to unjustified threats of patent
infringement. Employing a comparative, jurisdiction-based analysis, Zheng
investigates whether the unjustified nature of such threats originates from the
inaccuracy of the infringing accusation, or the inappropriateness of issuing
threats. In particular, Zheng reveals how to resolve threats which are issued
in an undue way but contain a correct allegation of patent infringement.

I
have only just started reading the book, but I have every reason to believe it
will be an indispensable contribution to the growing literature on wrongful
enforcement of IP rights.