What is the impact of new matter on benefit claims in patent applications?
New matter can have a significant impact on benefit claims in patent applications. The introduction of new matter in a later-filed application can result in the loss of the benefit claim to the prior-filed application. According to MPEP 211.05:
‘New or amended claims which introduce elements or limitations that are not supported by the as-filed disclosure violate the written description requirement. See, e.g., In re Lukach, 442 F.2d 967, 169 USPQ 795 (CCPA 1971) (subgenus range was not supported by generic disclosure and specific example within the subgenus range); In re Smith, 458 F.2d 1389, 1395, 173 USPQ 679, 683 (CCPA 1972) (an adequate description of a genus may not support claims to a subgenus or species within the genus).’
This means that if a later-filed application includes new matter not disclosed in the prior-filed application, it cannot claim the benefit of the earlier filing date for that new matter. The new matter will only be entitled to the filing date of the later-filed application. It’s crucial for applicants to ensure that all claimed subject matter is fully supported by the prior-filed application to maintain the benefit of the earlier filing date.
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