Nippon A&L Inc. v. The Controller of Patents
Whether an applicant may convert product-by-process claims into process claims during examination without breaching the limits on amendment.
What the court held
The Court allowed the appeal and held that such an amendment is not objectionable simply because the type of claim changes. What matters is whether the amended claims stay inside what the specification disclosed when it was first filed, and whether the scope has been narrowed rather than widened. Converting product-by-process claims into claims to the process alone met both requirements on the facts. The Court added that amendments made while an application is still being examined deserve a more liberal view than amendments sought after grant.
Why it matters to a reader of this provision
Applicants routinely need to narrow claims in answer to examination objections, and the amendment provisions set the outer limits. This decision spells out the two questions a Controller should ask and confirms that a change in claim type is not fatal by itself. Readers of the amendment provisions, or anyone responding to a first examination report, will find it shapes what is likely to be accepted.
Provisions this judgment interprets
Open a provision for the plain-language explanation, the worked example and the forms and deadlines it touches.
Does this judgment affect your matter?
Whether a decision helps or hurts depends entirely on your facts and your claims. A patent professional can tell you which.