Skip to main content

JAMS ADR Insights

Intellectual Property

In a patent claim, does ‘one’ or ‘a’ of something mean only one?

Patent claims are supposed to be clear so that a competitor of the patent owner can reliably know whether or not its competing product infringes upon a patent.

If a competitor’s product contains each and every element recited in a claim, it literally infringes upon that patent claim. If even one element is not present in the competitor’s product, the product does not literally infringe upon that patent claim.

So if a claim says that element A is connected to one of elements B, C, D and E, is there literal infringement if element A is connected to both elements B and C; i.e., element A is connected to not one but two of the specified elements?

Full Article Below:

Open in new window


This page is for general information purposes. JAMS makes no representations or warranties regarding its accuracy or completeness. Interested persons should conduct their own research regarding information on this website before deciding to use JAMS, including investigation and research of JAMS neutrals. See More

Scroll to top