Objecting
You can tell us about any objections you have to other people's patents.
Observations about patentability
You can make observations on the patentability of a published patent before grant.
Opinions
You can ask us for our opinion about infringement or validity of a patent.
Reviews
You can ask us to review an opinion you do not agree with.
Opposing requests for changes after grant
You can oppose an advertised request within the given time.
Other ways of challenging patents
You can ask us to settle disputes about ownership, licences and other technical issues.
Objecting to supplementary protection certificates (SPCs)
You can make observations on SPC applications.
