VIRxSYS has developed an extensive portfolio of intellectual property which is protected by a combination of patents, trade secrets, and trademark law. Below is a summary of the Company’s parent patents in the United States. VIRxSYS also has many foreign counterparts in countries around the world.
| Patent/Ser No. | Issue / Publication Date | Title |
| US 5,885,806 | March 23, 1999 | Methods to Prepare Conditionally Replicating Viral Vectors |
| US 6,114,141 | September 5, 2000 | Method to Express Genes from Viral Vectors |
| 09/667,893 | Filed September 22, 2000 | Conditionally Replicating Vectors and Methods for Their Production and Use |
| US 6,168,953 | January 2, 2001 | Genetic Antiviral Agents and Methods for Their Use |
| US 6,207,426 | March 27, 2001 | Conditionally Replicating Viral Vectors and their Use |
| US 6,410,257 | June 25, 2002 | Method to Express Genes from Viral Vectors |
| US 6,498,033 | December 24, 2002 | Lentiviral Vectors |
| US 6,627,442 | September 30, 2003 | Methods for a Stable Transduction of Cells with HIV-Derived Viral Vectors |
| US 20040203017 | October 14, 2004 | High-Throughput Methods for Identifying Gene Function using Lentiviral Vectors |
| US 6,835,568 | December 28, 2004 | Regulated Nucleic Acid Expression System |
| US 20050123514 | June 9, 2005 | Increased Transduction Using ABC Transporter Substrates and/or Inhibitors |
| US 20060003452 | June 30, 2005 | Vector Packaging Cell Line |
| US 20050196381 | September 8, 2005 | Two-vector Complementary Systems for Generating Immune Responses |
| 11/424,673 | Filed October 20, 2005 | Antibody Complexes |
| US 20050257277 | November 17, 2005 | Regulation of Transcription with a Cis-acting Ribozyme |
| 10/587,437 | Filed May 22, 2006 | Transduction of Primary Cells |