What is the term of a Philippine patent, and from what date is it computed?
A patent lasts twenty years from the filing date of the application.
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When do annual fees for maintaining a patent application or patent start to accrue?
Annual fees begin four years from publication and are due on each anniversary thereafter.
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What is the consequence of failure to pay annual fees, and is there any grace period?
Failure to pay annual fees causes withdrawal or lapse, subject to a six?month grace period with surcharge.
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May a patentee voluntarily surrender a patent, and what consents are required?
A patent may be surrendered with consent of all recorded right?holders, subject to possible opposition.
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How are mistakes of the IPO in an issued patent corrected?
The Director may correct, without fee, patent mistakes caused by the Office to conform with its records.
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Can mistakes in a patent incurred by the applicant be corrected, and under what conditions?
Formal and clerical mistakes not caused by the Office may be corrected upon request and payment of a fee.
In what ways may a patentee request changes in an issued patent, and what are the limits?
Patentees may limit or correct patents, but cannot add new disclosure and face limits on broadening.
How are amendments or corrections to a patent formally implemented and publicized?
Amendments are implemented by certificate attached to the patent and published in the IPO Gazette.
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On what grounds may any interested person seek cancellation of a patent or its claims?
Patents may be cancelled for lack of novelty, insufficient disclosure, or being contrary to public order or morality.
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What happens if the applicant fails to request substantive examination after publication?
If no examination request is filed within six months of publication, the application is deemed withdrawn.
