This document is a published patent application from FUJIFILM Corporation (Application No. 19403607, Publication No. US20260085282A1) filed on November 28, 2025. It describes a cell culture method designed to suppress foam aggregate formation. The method involves culturing cells at a density between 30 to 400 million cells/mL, either by controlling the poloxamer concentration in the foam liquid to be six times or less than that in the culture solution, or by adjusting the foam liquid's viscosity to 1.5 mPa·s or less under specific temperature conditions (35-38°C).

While this is a patent application and not a regulation imposing direct compliance obligations, it signals potential future technological advancements in biopharmaceutical manufacturing. Companies involved in cell culture and product manufacturing, particularly those using high cell densities, should be aware of this patented technology. Compliance officers in the pharmaceutical and biotechnology sectors may wish to monitor related developments and consider the implications for their own research, development, and manufacturing processes, especially concerning intellectual property and process optimization.