Appeal No. 2004-0479
Application No. 09/780,864
18. Cambron provides no other teachings other than injection
molding or extrusion for making the catheter.
"Absent any written description in the specification of
quantitative values, arguments based on measurement of a
drawing are of little value." In re Wright, 569 F.2d 1124,
1127, 193 USPQ 332, 335 (CCPA 1977). Also, we note that
"Patent drawings are not working drawings." See In re Wilson,
312 F.2d 449, 454, 136 USPQ 188, 192 (CCPA 1963). However,
this does not mean that the drawing cannot provide any
teachings to those skilled in the art. "We did not mean that
things patent drawings show clearly are to be disregarded."
In re Mraz, 455 F.2d 1069, 1072, 173 USPQ 25, 27 (CCPA 1972).
Now, we must determine what does the Cambron's Figure 2
show. Cambron's Figure 2 shows three main components which
fit into each other to make up the catheter assembly 10. The
three main components are the catheter and hub assembly
(without an element number), the blood-detecting chamber
assembly (without an element number) and the plug (element
20). The catheter and hub assembly includes the catheter 15
and hub 16. The blood-detecting chamber assembly includes the
1111
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