From Judge Wendy Beetlestone's opinion today in Pratico v. Giannopoulos (E.D. Pa.):
According to his Complaint, well-pleaded allegations from which are taken as true, Praticò is a professor at Temple University, where he researches "clinical pharmacology …." Giannopoulos graduated from Temple with a PhD in 2015. While he was at Temple, Praticò served as his advisor, and he conducted original research in Praticò's lab, which helped form the basis for his doctoral dissertation. Praticò also helped Giannopoulos publish that data, including in a journal from Springer Nature Academic Publishing … in 2018 and 2019.
As part of that process, the parties communicated via email, and Praticò notified Giannopoulos that his data was being put together and that he would "be in the authorship." The first article lists Praticò and Giannopoulos as authors, while the second article lists them and another person named Jian Chiu as authors. Giannopoulos allowed the Springer Nature papers to be featured on his profile on the website ResearchGate.
In March 2020, individuals challenged the accuracy of the data underlying these articles on a website called Pubpeer. Praticò responded by "email[ing] Dr. Giannopoulos to schedule a conversation." Giannopoulos did not, at this point, "say anything about [the] authorship" of these papers. Later, in 2023, further criticism of Giannopoulos's work came out.