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Last Updated: December 17, 2025

Claims for Patent: 5,498,421

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Summary for Patent: 5,498,421

Title:	Composition useful for in vivo delivery of biologics and methods employing same
Abstract:	In accordance with the present invention, there are provided compositions useful for the in vivo delivery of a biologic, wherein the biologic is associated with a polymeric shell formulated from a biocompatible material. The biologic can be associated with the polymeric shell itself, and/or the biologic, optionally suspended/dispersed in a biocompatible dispersing agent, can be encased by the polymeric shell. In another aspect, the biologic associated with polymeric shell is administered to a subject, optionally dispersed in a suitable biocompatible liquid.
Inventor(s):	Mark W. Grinstaff, Patrick Soon-Shiong, Michael Wong, Paul A. Sandford, Kenneth S. Suslick, Neil P. Desai
Assignee:	Abraxis Bioscience LLC
Application Number:	US08/200,235
Patent Claims:

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