What constitutes a “new ground of rejection” in a patent examiner’s answer?

Determining what constitutes a “new ground of rejection” is a highly fact-specific question. According to MPEP 1207.03(a), the ultimate criterion is “whether appellants have had fair opportunity to react to the thrust of the rejection.”

Some examples of new grounds of rejection include:

  • Changing the statutory basis of rejection from 35 U.S.C. 102 to 35 U.S.C. 103 (or vice versa)
  • Citing new calculations in support of overlapping ranges
  • Citing new structure in support of structural obviousness
  • Pointing to a different portion of the claim to maintain a “new matter” rejection

The examiner’s answer should designate these situations as new grounds of rejection to ensure the appellant has a fair opportunity to respond.

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Tags: appeals, mpep 1207.03(a), New Ground Of Rejection, patent examination