This site continually strives to maintain accurate and current
data. However, sometimes problems occur. Please see the
Disclaimer
The Site and the network have windows of planned general
maintenance activities from Saturday at 6:00 p.m. to Sunday at 4:00 p.m. ET. During
this period of time there may be disruptions to the image database or to the
site.
Database maintenance is performed each Saturday between 5:00 p.m.
and 7:00 p.m. ET. During this period of time images might not be available.
Bill C-29 — To assist you in determining whether a corrective
payment needs to be made, relevant fee schedules and fee payment
history with respect to specific patent applications or patents are now
available through the Canadian Patents Database.
A recent quality check of the Canadian Patents Database shows anomalies
in some claims and abstract texts. These anomalies are caused by the inclusion
in the text of a "less than" (<) symbol immediately followed by a character,
e.g., "<m." The browser interprets this sequence as a tag code and the text
immediately following the "less than" (<) symbol is hidden until the browser
encounters the closing tag, which is the "greater than" symbol (>).
This problem does not affect search results; however, where this situation
occurs, users are asked to consult the image of the document for the full text.
We are working to resolve this problem and apologize for any inconvenience
this may cause.
April 1, 2004
Maintenance Fee and Expired Status Information Now Available
As of March 31, 2004, clients can access information concerning maintenance fee payments
on the Administrative Status page of each patent document.
Maintenance fee information includes the date and amount of the last payment received,
the date and amount of the next payment if the applicant or grantee is a small entity
type and the date and amount of the next payment if the applicant or grantee is a large entity type.
December 11, 2001
Update during the Season's holidays
The update of this database for the week
of 12/25/2001 and 01/01/2002 will be available on Wednesday, January 2,
2002 for the two weeks period.
October 6, 2000
Important
notice to users of the Canadian Patent Database regarding searches by
International Patent Classification (IPC)
June 20, 2000
The Canadian Patent Database has been improved.
- The English and French databases have now been integrated
and it is possible to use either official language in the same search.
- In the Advanced search, you can now select the language
of filing.
- The total possible results per search has been increased
to 1000 patents and you can break down the resulting number of documents into
manageable lists. To access the lists you must use the navigation buttons in
the hitlist page.
- The patent document details are now collected in a new
browser window. You can navigate through your collection of Details pages by
using the Back and Forward buttons of you browser.
October 29, 1999
You can now search more bibliographic fields, like
inventor country, applicant name, PCT information. It is also possible to
restrict the search to specific
documents like PCT documents, non-PCT documents and/or Licence
availability. All these changes are reflected mainly on the Boolean and
Advanced search pages.
October 26, 1999
The patent documents detail screen shows more data
information such as applicant names, PCT information and Availability of
licence.
September 20, 1999
The automatic "stemming" function is no longer being used
for the search of word variations. In order to extend the variation of
characters in words, you can still use the
wildcard function . For example,
you can use "chang*" to find words such as "change", "changed" or
"changing.
