I did a cursory search in the MPEP before posting and all I found was the same section you found. When I made my comment, I was thinking of a BPAI decision which indicated that common ownership required "evidence":
Appellants assert that the Sander reference should be disqualified as prior art due to common ownership. We disagree. Appellants did not timely file evidence of common ownership. Instead, Appellants merely state that “Appellant just realized Sander is only available as prior art under 35 US.C. §102(e) [sic]” and “Sander is disqualified as prior art under 35 U.S.C. § 103(c) since the instant Application and Sander were. . . [commonly] owned.” (App. Br. 9, 10.) (emphasis added). While Appellants’ statement
may provide adequate evidence of common ownership ( see MPEP § 706.02(l)(2)(II)) if presented during prosecution, the Examiner has the discretion to enter evidence on the record after a final rejection, and such a decision is petitionable, but not appealable.
Ha - good point.
Similarly, MPEP 706.02(l)(2) states:
A statement such as "Application X and Patent Z were, at the time the invention of Application X was made, jointly owned by Companies A and B" would be sufficient evidence of common ownership.
I don't know why this statement is considered "evidence" - at least not "evidence" in any sense forbidden by the Office's policy on final rejections and compact prosecution. The statement here, and in that (likely non-precedential) BPAI decision, eviscerates any distinction between "evidence" and mere lawyer arguments, especially considering that
every statement a practitioner makes in a paper is bound by the certification and ethic rules of 37 CFR 1.4 and 10 et seq. Is the BPAI here implying that
every statement an attorney makes after final is "evidence" and, therefore, governed by rule 116, even though examiners routinely consider "mere attorney argument" after final rejection that does not satisfy rule 116?
The whole policy behind final rejections and compact prosecution is to prevent applicants from untimely presenting issues that would unduly extend or delay prosecution. But a statement of common ownership does not do this. As explained above (and as dab2d agrees), the statement merely satisfies some formalities to overcome the prior art of record, which should be the best art available. Although the Examiner must ensure compliance of the priority document with 112, this is a routine task and generally not unduly burdensome after final.
Also, in contrast to a rule 131 or 132 declaration, which can appear out of the blue, the Examiner should reasonably expect applicant to perfect priority. In fact, although not stated in Rule 1.116, "whether the examiner should expect the amendment" is explicitly made a factor for whether an examiner can make a new rejection final in MPEP 706.07(a). I would say that a similar policy should apply to rule 1.116: "evidence" of common ownership should be entered and considered when the Examiner should have expected or foreseen that the "evidence" would be submitted.
Note that this distinction between "evidence" and mere "lawyer argument" is a major issue in the pending Hyatt Supreme Court case, as discussed in this excellent amicus brief from Verizon:
http://www.americanbar.org/content/dam/aba/publishing/previewbriefs/Other_Brief_Updates/10-1219_neutralamcu4hightechpatentowners.authcheckdam.pdfMany things about what's appropriate after final are not 100% clear to me. In fact, the basic question of the meaning of "evidence" is not clear to me. As I recall, one good thing about the proposed-but-suspended-appeal-rules was a clarification about this important term.
I agree that what constitutes "evidence" is not clear. In light of the BPAI decision, and esp. the statement in 706.02(l)(2) (which I quote above), I think your position that the "evidence" cannot be submitted after final is on better ground. I still think that there are technical, and esp. policy, arguments for the opposite conclusion, as outlined above.
The question of Rule 1.71(g) amendments raise a different question. It's not clear to me when a Rule 1.71(g) amendment is required, and when it is not. But (unlike the issue of "evidence" discussed above), this just reflects a gap in my own understanding, and not an inherent imprecision in the language used. A rule 1.71(g) amendment is clearly an "amendment," whereas a statement by a practitioner of common ownership is "evidence" in only a controversial sense. A rule 1.71(g) amendment is not always required, and I don't have enough experience to know when it is required - it relates to subtleties of 103(c) and joint ownership agreements. Maybe someone here can help explain this latter issue...