Prosecution Insights
Last updated: April 19, 2026
Application No. 18/922,838

Method For Determining An Internal Structure Of A Dental Prosthesis Base, Method For The Production Of A Dental Prosthesis Base, Dental Prosthesis Base, Data-Processing Device, Computer Program And Computer-Readable Medium

Non-Final OA §101§102§112
Filed
Oct 22, 2024
Examiner
NELSON, MATTHEW M
Art Unit
3772
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Ivoclar Vivadent AG
OA Round
1 (Non-Final)
58%
Grant Probability
Moderate
1-2
OA Rounds
3y 4m
To Grant
81%
With Interview

Examiner Intelligence

Grants 58% of resolved cases
58%
Career Allow Rate
497 granted / 860 resolved
-12.2% vs TC avg
Strong +23% interview lift
Without
With
+23.3%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
46 currently pending
Career history
906
Total Applications
across all art units

Statute-Specific Performance

§101
3.1%
-36.9% vs TC avg
§103
42.7%
+2.7% vs TC avg
§102
24.6%
-15.4% vs TC avg
§112
22.6%
-17.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 860 resolved cases

Office Action

§101 §102 §112
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Election/Restrictions Applicant's election with traverse of species a (Fig. 4; claims 1, 3-4, 8, 10-15) in the reply filed on 3/5/2026 is acknowledged. The traversal is on the grounds that the examiner will necessarily search the same prior-art field meaning no additional burden exists for the species-specific claims. This is not found persuasive because each species is mutually exclusive in how the volumes of the dental prosthesis base are determined and will therefore require different searches, potentially in different classifications. The requirement is still deemed proper and is therefore made FINAL. Claims 2, 5-7, 9 are withdrawn from further consideration pursuant to 37 CFR 1.142(b), as being drawn to a nonelected invention (having differing volume determinations than species of Fig. 4 elected), there being no allowable generic or linking claim. Applicant timely traversed the restriction (election) requirement in the reply filed on 3/5/2026. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 1, 3-4, 8-11, 13-15 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claim 1 recites the limitation "the direction" in line 9. Claim 10 recites “the particular sub-volume” in line 3. Claim 11 recites “the production” in line 1. There is insufficient antecedent basis for this limitation in the claim. Claim 3 recites “deducing at least one sub-volume”, however this limitation has already been recited in claim 1 and therefore it is unclear if this is referring to the same sub-volume or a different sub-volume. Claim 10 recites “to the particular sub-volume which comprises the gum ridge line”, however in the case of claim 1, from which 10 depends, when “obtaining gum ridge line data which describe the gum ridge line”, it is unclear which particular sub-volume would comprise the gum ridge line. The surface separating the two volumes goes through the gum ridge line and therefore no particular sub-volume alone comprises the gum ridge line. Claim Rejections - 35 USC § 101 35 U.S.C. 101 reads as follows: Whoever invents or discovers any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof, may obtain a patent therefor, subject to the conditions and requirements of this title. Claims 1-10 are rejected under 35 U.S.C. 101 because the claimed invention is directed to an abstract idea without significantly more. The claims recite obtaining/identifying and defining/deducing limitations. This judicial exception is not integrated into a practical application because the generically recited computer elements do not add a meaningful limitation to the abstract idea because they amount to simply implementing the abstract idea on a computer. The claims do not include additional elements that are sufficient to amount to significantly more than the judicial exception because storing and retrieving information in memory is well-understood, routine, conventional computer function MPEP 2106.05(d). Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claim 12 is rejected under 35 U.S.C. 102(a)(1) as being anticipated by Toyoda (US 2022/0142757). Toyoda shows a dental prosthesis base (Fig. 1A with tooth 31 attached) comprising an outer shell (exterior of base) and an internal structure (interior thereof), wherein the internal structure is determined by the method as claimed in claim 1 (this is considered product-by-process where only the resulting structure is at issue, where the method of claim 1 does not impart any resulting structure since the sub-volumes determined by claim 1 impart no structural distinction between the volumes). Allowable Subject Matter Claims 1, 3-4, 8, 10-11, 12-15 would be allowable if rewritten or amended to overcome the rejections under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 2nd paragraph, and 101 set forth in this Office action. The following is a statement of reasons for the indication of allowable subject matter: The closest prior art of Toyoda similarly shows a denture base with multiple volumes having different properties, however they are not determined in the same manner as the present method, nor do they structurally match the result of the present method when different materials are incorporated. The present invention is specific to how the volumes are determined in relation to a reference point and gum ridge line. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to MATTHEW NELSON whose telephone number is (571)270-5898. The examiner can normally be reached on Monday-Friday 7:30am-5:00pm EDT. If attempts to reach the examiner by telephone are unsuccessful, please contact the examiner’s supervisor, Eric Rosen, at (571) 270-7855. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /MATTHEW M NELSON/Primary Examiner, Art Unit 3772
Read full office action

Prosecution Timeline

Oct 22, 2024
Application Filed
Mar 19, 2026
Non-Final Rejection — §101, §102, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12588968
DENTAL HANDPEICE
2y 5m to grant Granted Mar 31, 2026
Patent 12564481
PATIENT INDIVIDUAL PHYSICAL TRANSFER KEY
2y 5m to grant Granted Mar 03, 2026
Patent 12551318
METHOD, SYSTEM AND MODEL FOR INDIRECT BONDING
2y 5m to grant Granted Feb 17, 2026
Patent 12521216
CONNECTOR FOR A DENTAL VALVE
2y 5m to grant Granted Jan 13, 2026
Patent 12521209
METHODS OF SEPARATING OCCLUSAL SURFACES WITH REPOSITIONING JAW ELEMENTS
2y 5m to grant Granted Jan 13, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
58%
Grant Probability
81%
With Interview (+23.3%)
3y 4m
Median Time to Grant
Low
PTA Risk
Based on 860 resolved cases by this examiner. Grant probability derived from career allow rate.

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