CC0000: The color(s) red, dark gray, and light gray is/are claimed as a feature of the mark.
D10000: "PHARMACEUTICALS"
DM0000: The mark consists of "TETRAPHASE PHARMACEUTICALS" the words "TETRA" and "PHARMACEUTICALS" appear in dark gray and the word "PHASE" appears in light gray to the right of a design that is composed of a red square with red lines showing an opening at each of the four sides of the square.