New Proposed Rules: Maiming Markush Claims

A new set of proposed rules were published in the Federal Register on August 10, 2007. The new anti-Markush rules would close down a potential loophole in the soon-to-be-finalized claim limitation rules. 

Highlights:

  • An intra-claim restriction is proper unless all species share a feature that is substantial and essential for common unity.
  • A claim may not incorporate part of the specification by reference unless absolutely necessary.
  • Markush alternatives must be substitutable; may not encompass other alternatives; may not be a set of further alternatives; and must not make the claim difficult to construe.

Documents:

Other upcoming finalized rules:

  • Rules limiting continuations are expected to be finally implemented within the next few weeks.
  • Rules limiting the number of claims being examined are expected to be finally implemented within the next few weeks.
  • Rules requiring more extensive IDS submissions are being reviewed by White House staff and are expected to be finally implemented in early 2008.