CNIPA issued a Notice of Approval for Patent lately, which states that the CN patent right titled with "Tandem-paired column chemistry for high-throughput proteomic exosome analysis" was granted to NX PRENATAL INC (a company located in The United States).

Beijing CAIHE Law Firm represented NX PRENATAL on this case before CNIPA.

The abstract of the patent is as follows：

Compositions and methods for sample preparation and mass spectrometric analysis of peptide samples obtained from biological samples are provided. The compositions and methods include a tandem column system in which a trap column is in fluid contact with an analytical column such as, for example, a HPLC column. As analytes are eluted from the analytical column, they can be passed to a detector (e.g., a mass spectrometer) for peptide analysis.