Prosecution Insights
Last updated: July 17, 2026
Application No. 19/059,376

Dissimilar material joining via interlocking metasurfaces

Non-Final OA §102
Filed
Feb 21, 2025
Priority
Aug 16, 2022 — CIP of 17/888,846
Examiner
UPCHURCH, DAVID M
Art Unit
Tech Center
Assignee
National Technology & Engineering Solutions of Sandia LLC
OA Round
1 (Non-Final)
74%
Grant Probability
Favorable
1-2
OA Rounds
8m
Est. Remaining
92%
With Interview

Examiner Intelligence

Grants 74% — above average
74%
Career Allowance Rate
762 granted / 1035 resolved
+13.6% vs TC avg
Strong +18% interview lift
Without
With
+17.9%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 1m
Avg Prosecution
24 currently pending
Career history
1053
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
35.0%
-5.0% vs TC avg
§102
55.2%
+15.2% vs TC avg
§112
9.1%
-30.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1035 resolved cases

Office Action

§102
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 . Specification The abstract of the disclosure is objected to because of the use of improper phrasing. A corrected abstract of the disclosure is required and must be presented on a separate sheet, apart from any other text. See MPEP § 608.01(b). Applicant is reminded of the proper language and format for an abstract of the disclosure. The abstract should be in narrative form and generally limited to a single paragraph on a separate sheet within the range of 50 to 150 words in length. The abstract should describe the disclosure sufficiently to assist readers in deciding whether there is a need for consulting the full patent text for details. The language should be clear and concise and should not repeat information given in the title. It should avoid using phrases which can be implied, such as, “The disclosure concerns,” “The disclosure defined by this invention,” “The disclosure describes,” etc. In addition, the form and legal phraseology often used in patent claims, such as “means” and “said,” should be avoided. Claim Rejections - 35 USC § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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. Claims 1-9 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by As for Claim 1, discloses an interlocking metasurfaces, comprising a first metasurface of a first material having a first array of mechanically interlocking surface features (20 having fasteners 30) that mate with a second metasurface of a second material having a second array of mechanically interlocking surface features (the other 20 having fasteners see also para [0041]). Re: Claim 2. The interlocking metasurfaces of claim 1, wherein the interlocking metasurfaces are configured such that the first and second materials reach their respective yield stresses at the same time when a tensile load is applied to the interlocking metasurfaces (see para [0047-0049]). Re: Claim 3. The interlocking metasurfaces of claim 1, wherein the mechanically interlocking surface features of at least one of the first or second metasurfaces comprise a polymer (see para 0047-0049]), ceramic, or metal. Re: Claim 4. The interlocking metasurfaces of claim 1, wherein the first metasurface comprises a first array of interlocking T-shaped features (30/40) on a first supporting surface and the second metasurface comprises a second array of interlocking T-shaped features on a second supporting surface (30/40), wherein the interlocking T-shaped features are configured to provide a T-slot (see spacing between 40, see Fig. 1). Re: Claim 5. The interlocking metasurfaces of claim 4, wherein the interlocking metasurfaces are configured to provide asymmetric interlocking metasurfaces, wherein at least one geometric component of the interlocking T-shaped features of the first and/or second array is modified such that the first and second materials reach their respective yield stresses at the same time when a tensile load is applied to the interlocking metasurfaces (see Fig. 1 and para [0047-0049]). Re: Claim 6. The interlocking metasurfaces of claim 1, wherein the interlocking T-shaped features are configured to provide a snapping T-slot (see Fig. 1). Re: Claim 7. The interlocking metasurfaces of claim 1, wherein at least one of the first or second array of the mechanically interlocking surface features comprises arrow-like features (40) off of a supporting surface (surface of 50, see Fig. 1). Re: Claim 8. The interlocking metasurfaces of claim 7, wherein the arrow-like features comprise a split arrowhead (see 15 and 16, Fig. 7). Re: Claim 9. The interlocking metasurfaces of claim 7, wherein the arrow-like features comprise a locked split arrowhead (see Fig. 7). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure: Adams et al. U.S. 2014/0283342. Any inquiry concerning this communication or earlier communications from the examiner should be directed to DAVID M UPCHURCH whose telephone number is (571)270-7957. The examiner can normally be reached 6AM-3PM EST M-F. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Jason San can be reached at (571)272-6531. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /DAVID M UPCHURCH/Primary Examiner, Art Unit 3677
Read full office action

Prosecution Timeline

Feb 21, 2025
Application Filed
Jun 03, 2026
Non-Final Rejection mailed — §102 (current)

Precedent Cases

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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
74%
Grant Probability
92%
With Interview (+17.9%)
2y 1m (~8m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1035 resolved cases by this examiner. Grant probability derived from career allowance rate.

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