The European Patent Office (EPO) has published a new patent application, EP2026030665A1, related to methods for expanding Natural Killer (NK) cells in vitro using feeder cell-free systems. The publication, dated March 18, 2026, includes detailed International Patent Classification (IPC) codes such as C12N 5/0783, C12M 3/00, and A61K 40/15, indicating the technical areas covered by the patent.

This patent publication is primarily of interest to entities involved in biotechnology research, pharmaceutical development, and cell therapy manufacturing within the designated states. While this is a patent publication and not a regulatory rule, it signifies potential intellectual property claims in the field of NK cell expansion, which could impact future research, development, and commercialization strategies for companies operating in this space. No immediate compliance actions are required, but legal and R&D departments should be aware of this filing for competitive intelligence and IP landscape monitoring.