Prosecution Insights
Last updated: October 02, 2026
Application No. 18/522,460

SYSTEMS AND METHODS FOR DISASSEMBLING TWO-DIMENSIONAL VAN DER WAALS CRYSTALS INTO MACROSCOPIC MONOLAYERS AND REASSEMBLING INTO ARTIFICIAL LATTICES

Non-Final OA §102§103
Filed
Nov 29, 2023
Priority
Dec 06, 2019 — provisional 62/944,753 +2 more
Examiner
FERGUSON, LAWRENCE D
Art Unit
1781
Tech Center
1700 — Chemical & Materials Engineering
Assignee
The Trustees of Columbia University in the City of New York
OA Round
2 (Non-Final)
78%
Grant Probability
Favorable
2-3
OA Rounds
0m
Est. Remaining
92%
With Interview

Examiner Intelligence

Grants 78% — above average
78%
Career Allowance Rate
793 granted / 1012 resolved
+13.4% vs TC avg
Moderate +13% lift
Without
With
+13.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
44 currently pending
Career history
1040
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
50.9%
+10.9% vs TC avg
§102
19.2%
-20.8% vs TC avg
§112
16.6%
-23.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1012 resolved cases

Office Action

§102 §103
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 . DETAILED ACTION Response to Amendment 1. This action is in response to the amendment filed July 2, 2026. Claim 16 was amended, rendering claims 1-28 pending, with claims 1-15 withdrawn as a non-elected invention. Claim Rejections – 35 USC § 103 2. The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent may not be obtained though the invention is not identically disclosed or described as set forth in section 102 of this title, if the differences between the subject matter sought to be patented and the prior art are such that the subject matter as a whole would have been obvious at the time the invention was made to a person having ordinary skill in the art to which said subject matter pertains. Patentability shall not be negatived by the manner in which the invention was made. 3. Claims 16 and 20 are rejected under 35 U.S.C. 103 as being unpatentable over Levy et al. (U.S. 6,503,321). Levy discloses single-crystal films having second harmonic generation (column 11, lines 16-25), as in claim 16. In claim 16, the phrases, “for creating a macroscopic artificial lattice” and “configured for assembly into an artificial lattice based on one or more properties, wherein the one or more properties comprise nonlinear optical properties comprising second harmonic generation” is a intended use. A recitation of the intended use of the claimed invention must result in a structural difference between the claimed invention and the prior art in order to patentably distinguish the claimed invention from the prior art. If the prior art structure is capable of performing the intended use, then it meets the claim. In a claim drawn to a process of making, the intended use must result in a manipulative difference as compared to the prior art. See In re Casey, 152 USPQ 235 (CCPA 1967) and In re Otto, 136 USPQ 458, 459 (CCPA 1963). In claim 16, the phrase, “adapted from a bulk van der Waals crystal” introduces a process limitation to the product claim. For purposes of examination, product-by-process claims are not limited to the manipulation of the recited steps, only the structure implied by the steps. See MPEP 2113. In the present case, the recited steps imply a structure having single crystal monolayers. The reference suggests such a product because Levy discloses single-crystal films having second harmonic generation (column 11, lines 16-25). Concerning claim 20, Figure 3 of Levy shows the single-crystal films (32) create a heterobilayer. Claim Objection 4. Claims 18-19, 21-22, 24-28 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. The closest prior art does not teach or suggest the recited composition further including where a first of the two or more macroscopic single crystal monolayers has an orientation difference from a second of the two or more macroscopic single crystal monolayers, where the first and single crystal monolayers are adapted for reassembly into an artificial lattice. The closest prior art does not teach or suggest the recited composition further including where the two or more macroscopic single crystal monolayers are transition metal dichalcogenide monolayers. The closest prior art does not teach or suggest the recited composition further including where a configuration of the monolayers includes an angular and/or lattice mismatch. The closest prior art does not teach or suggest the recited composition further including where the transition metal dichalcogenide is chosen from the group consisting of MoS2, WS2, MoSe2, WS2, WSe2, MoTe2, and MoS2. The prior art does not teach motivation or suggestion for modification to make the invention as instantly claimed. Response to Arguments 5. Applicant’s argument of the rejection made under 35 U.S.C. 102(a)(1) as being anticipated by Velicky et al., "Mechanism of Gold-Assisted Exfoliation of Centimeter-Sized Transition-Metal Dichalcogenide Monolayers," ACS Nano 12: 10463-10472 (2018) is moot based on grounds of new rejection. Conclusion 6. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Lawrence Ferguson whose telephone number is 571-272-1522. The examiner can normally be reached on Monday through Friday 9:00 AM – 5:30PM. If attempts to reach the examiner by telephone are unsuccessful, the examiner's supervisor, Frank Vineis, can be reached on 571-270-1547. 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). /LAWRENCE D FERGUSON/Examiner, Art Unit 1781
Read full office action

Prosecution Timeline

Nov 29, 2023
Application Filed
Mar 31, 2026
Non-Final Rejection mailed — §102, §103
Jul 02, 2026
Response Filed
Sep 16, 2026
Non-Final Rejection mailed — §102, §103 (current)

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

2-3
Expected OA Rounds
78%
Grant Probability
92%
With Interview (+13.2%)
2y 10m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1012 resolved cases by this examiner. Grant probability derived from career allowance rate.

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