Case narrowing is an issue that eventually comes up in most patent cases—the idea that each party should have to reduce the number of claims and prior art references at points during the case.
How Claim Narrowing Usually Goes in a Patent Action
If parties want to avoid a dispute down the line, they can include case narrowing in the scheduling order. More often, however, it comes up at some point after the plaintiffs makes its initial election of asserted claims, and the parties start to get an understanding of the scope of the case.
Typically the initial narrowing occurs before claim construction, and a second round occurs afterwards, sometimes around the time of final contentions. …