The rapid development of science and technology has had a major impact on the book industry, which is increasingly facilitated by the presence of the concept of online buying and online selling through the online marketplace. The various advantages of utilizing the online marketplace for the book industry have also created problems that must be faced by the subject of the book industry, namely the increasingly widespread circulation of pirated books sold through marketplaces. The rampant sale of pirated books on the marketplace will directly hurt the book industry and in the long term, it can slowly kill the creative industry in Indonesia. Implementation of Law Number 28 of 2014 concerning Copyright in eradicating piracy of college textbooks circulating in marketplaces is no longer effective, even as if ruled out of its existence. One of the effects of the ineffective application of Law Number 28 of 2014 concerning Copyright is the nature of complaint offenses that require prior complaints from parties who feel aggrieved so that law enforcement can be carried out against copyright infringement. This research was compiled in order to solve the problem of the rampant sale of pirated college textbooks sold through marketplaces, so that the authors can have their rights protected and feel more valued for the works they create. The type of research applied in this research is normative-empirical. The data used is secondary data through literature studies supported by primary data through interviews. The approach applied in this study is legal systematics and legal synchronization. All data that has been obtained will be processed into qualitative data using the deductive method, namely drawing conclusions from a problem that is general to specific. In the analysis section, the researcher will conduct an assessment of the application of Law Number 28 of 2014 concerning Copyright in order to protect the exclusive rights of creators of college textbooks, examine the responsibilities that need to be carried out by marketplace administrator based on laws and regulations, and examine the efforts made by marketplace administrator in order to eradicate the circulation of pirated college textbooks in the marketplace. The analysis will result in conclusions and constructive suggestions for related parties to resolve the legal issues.