Yasuhiro Sato wrote an article published in The Invention 2025 No.5. Yasu’s article, “Recent IP High Court Case Denying the Doctrine of Equivalents for the Numerical Limitation Invention,” discusses a significant Intellectual Property High Court decision regarding numerical limitation inventions. The court ruled that an accused product does not infringe on a patent when the claim specifies a certain numerical parameter as an integer value (e.g., “molecular weight of 700 or more”), even if the product’s value (699.91848) would meet the claim limitation after rounding.