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.