<s>
Baidu	B-Application
Patents	I-Application
,	O
or	O
Baidu	B-Application
Zhuanli	I-Application
(	O
Chinese	O
:	O
百度专利	O
)	O
is	O
a	O
Chinese	O
free	O
online	O
patent	O
search	O
service	O
,	O
launched	O
on	O
1	O
January	O
2008	O
.	O
</s>
<s>
The	O
Baidu	B-Application
Patents	I-Application
search	O
engine	O
is	O
the	O
result	O
of	O
a	O
collaboration	O
between	O
the	O
China	O
Patent	O
Information	O
Center	O
(	O
CPIC	O
)	O
,	O
the	O
Chinese	O
Patent	O
Office	O
(	O
SIPO	O
)	O
and	O
Baidu	B-Application
.	O
</s>
<s>
Baidu	B-Application
Patent	I-Application
Search	I-Application
is	O
said	O
to	O
be	O
integrated	O
with	O
a	O
patent	O
database	O
which	O
amounts	O
to	O
2.7	O
million	O
Chinese	O
patents	O
.	O
</s>
