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A multiple dependent claim is a dependent claim which further limits and refers back in the alternative to more than one preceding independent or dependent claim.


Acceptable multiple dependent claims shall refer to preceding claims using the terms "or, any one of, one of, any of, either." A multiple dependent claim may not depend on another multiple dependent claim, either directly or indirectly.


An example of a multiple dependent claim:

1. An apparatus for drilling holes comprising a drill.
2. The apparatus according claim 1 wherein the drill is sharp.
3. The apparatus according to claim 2 wherein the drill is also made of gold.
4. The apparatus according to any of claims 1 or 3 wherein the drill is also thick.

Claim 4 is a multiple dependent claim, claims 2 and 3 are not.