Installation of Patch Cluster

Hi,
    I got the error while installing solaris patch cluster. Check the below error. Any one can help me on this.?.

root@sas-ria:# cp Recommended\ OS\ Patchset\ Solaris\ 10\ SPARC-15-03-2013 /opt/
cp: Recommended OS Patchset Solaris 10 SPARC-15-03-2013: is a directory
root@sas-ria:# cp -r Recommended\ OS\ Patchset\ Solaris\ 10\ SPARC-15-03-2013 /opt/
root@sas-ria:# cd /opt/
root@sas-ria:# cd Recommended\ OS\ Patchset\ Solaris\ 10\ SPARC-15-03-2013/
root@sas-ria:# df -h .
Filesystem             size   used  avail capacity  Mounted on
/dev/dsk/c1t10d0s5      39G    19G    20G    48%    /opt
root@sas-ria:# unzip 10_Recommended.zip
Archive:  10_Recommended.zip
  End-of-central-directory signature not found.  Either this file is not