Prosecution Insights
Last updated: April 19, 2026
Application No. 18/616,393

GRAPHENE-BASED OPTICAL BISTABLE DEVICE WITH TERNARY PHOTONIC CRYSTAL STRUCTURE

Non-Final OA §102§103§112
Filed
Mar 26, 2024
Examiner
WASHINGTON, TAMARA Y
Art Unit
2872
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Anhui University
OA Round
1 (Non-Final)
81%
Grant Probability
Favorable
1-2
OA Rounds
2y 9m
To Grant
89%
With Interview

Examiner Intelligence

Grants 81% — above average
81%
Career Allow Rate
464 granted / 571 resolved
+13.3% vs TC avg
Moderate +8% lift
Without
With
+8.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
52 currently pending
Career history
623
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
41.7%
+1.7% vs TC avg
§102
29.7%
-10.3% vs TC avg
§112
17.6%
-22.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 571 resolved cases

Office Action

§102 §103 §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 . Priority Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. Claim Objections Claim 1 is objected to because of the following informalities: Claim 1, lines 9-10 state “wherein wherein” should the limitation should be corrected to “wherein”. Appropriate correction is required. Specification The disclosure is objected to because of the following informalities: In the Specification, ¶[0099] states “wherein the composite structure is, Air|(ABP)N1 CGM C(ABP)N2/Air wherein M, N1, and N2 each represent a quantity of spatial cycles, the dielectric layer A is made of a ZrO2 material, the dielectric layer B is made of a Si material, and the dielectric layer P is made of an anisotropic plasma material”. Is “Air|(ABP)N1 CGM C(ABP)N2/Air” a formula for the structure or an actual structure? The superscript to (ABP)N1 shows “N1”, but the limitation definition shows “N1” (with “1” written as a subscript). The superscript to (ABP)N1 shows “N2”, but the limitation definition shows “N2” (with “2” written as a subscript). The limitation definition “ZrO2” is not defined. Appropriate correction is required. Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claim 1 is rejected under 35 U.S.C. 112(a) or pre-AIA 35 U.S.C. 112, first paragraph, as based on a disclosure which is not enabling. The disclosure does not enable one of ordinary skill in the art to practice the invention without definitions of whether the limitation “wherein the composite structure is Air|(ABP)N1 CGM C(ABP)N2/Air” is a formula for a structure or a structure, alone, which is/are critical or essential to the practice of the invention but not included in the claim(s). See In re Mayhew, 527 F.2d 1229, 188 USPQ 356 (CCPA 1976). Claims 2-7 depend from Claim 1 and inherit the deficiencies thereof. 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 1-7 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, lines 10-13 recites “wherein the composite structure is, Air|(ABP)N1 CGM C(ABP)N2/Air wherein M, N1, and N2 each represent a quantity of spatial cycles, the dielectric layer A is made of a ZrO2 material, the dielectric layer B is made of a Si material, and the dielectric layer P is made of an anisotropic plasma material”. Is “Air|(ABP)N1 CGM C(ABP)N2/Air” a formula for the structure or an actual structure? For examination purposes, “wherein the composite structure is, Air|(ABP)N1 CGM C(ABP)N2/Air wherein M, N1, and N2 each represent a quantity of spatial cycles, the dielectric layer A is made of a ZrO2 material, the dielectric layer B is made of a Si material, and the dielectric layer P is made of an anisotropic plasma material” will be treated as “wherein the composite structure comprises wherein the dielectric layers are made of a ZrO2 material, a silicone material, and an anisotropic plasma material”. The superscript to (ABP)N1 shows “N1”, but the limitation definition shows “N1” (with “1” written as a subscript). For examination purposes, “N1” will be taken as “N1”. The superscript to (ABP)N1 shows “N2”, but the limitation definition shows “N2” (with “2” written as a subscript). For examination purposes, “N2” will be taken as “N2”. Claim 1, line 11 states “ZrO₂”. Chemical compounds must be defined in the Specification and the Claim. For examination purposes, “ZrO₂” will be taken as “zirconium dioxide”. Claim 1, line 12 states “made of Si material”. Si is not defined in the Specification and the Claim. For examination purposes, “Si” will be taken as “silicone”. Claim 2, line 2 states “n0 = 1”. The limitation n0 is not defined in the Specification nor the Claim. For examination purposes, “n0 = 1” will be taken as “1”. Claim 3, line 2, it is unclear what “[Symbol font/0x65]a = 4.21” means since this limitation “[Symbol font/0x65]a” has not been defined in the Specification or the Claim; and in Claim 3, line 3 it is unclear what “[Symbol font/0x65]b = 7.95” means since this limitation also has not been defined. For examination Because “[Symbol font/0x65]a = 4.21” and “[Symbol font/0x65]b = 7.95” have not been defined, the scope of the claims is so unclear that it will not be further treated on the merits or examined. Claim 4, lines 3-4 state “wherein thicknesses of the layers in the composite structure are respectively as follows: da = 30um, db = 21.28um, dp = 60um, dc = 30um, and dg = 0.33nm and M = 1, N1 = 2, and N2 = 3”. The limitations, da, db, dp, dc, and dg are indefinite as these terms have not been defined in the Specification and the Claim. The limitations, da, db, dp, dc, and dg, are not shown in any formula, definition, etc., in the Specification or the Claim. In addition, what unit of measure is “um” since da, db, dp, dc claim this as a unit of measuring the thickness? For examination purposes, the scope of the claims is so unclear that it will not be further treated on the merits or examined, Claims 2-7 inherit the indefiniteness of the claim(s) from which they depend. Appropriate correction is required. 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(s) 1 and 2 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Ouderkirk et al. (hereafter Ouderkirk) (US 2022/0276483 A1), as best understood. With respect to Claim 1, Ouderkirk discloses a graphene-based optical bistable device with a ternary photonic crystal structure, the graphene-based optical bistable device comprising: a composite structure suitable for a terahertz band (Figure 7), wherein the composite structure is formed by a ternary photonic crystal structure (¶[0046] and ¶[0066]), a defect layer C (¶[0066]), and a graphene layer G (¶[0066]) through permutation and combination (¶[0066]); wherein the ternary photonic crystal structure (¶[0057]) is a periodic photonic crystal structure (¶[0057]) formed by three alternately-arranged dielectric layers A, B, and P (Figure 7) with different dielectric constants (¶[0119]), two defect layers C (¶[0066]) are embedded in the ternary photonic crystal structure, and the graphene layer G is embedded between the two defect layers C (¶[0066]); wherein the composite structure (Figure 7) comprises wherein the dielectric layers (Figure 7) are made of a zirconium dioxide material (¶[0058]), a silicone material (¶[0049]), and an anisotropic plasma material (¶[0060]). With respect to Claim 2, Ouderkirk further discloses wherein the defect layer C (¶[0066]) is filled with air and has a refractive index of n0=1 (Table 1). Claim Rejections - 35 USC § 103 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 for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claim(s) 5-7 is/are rejected under 35 U.S.C. 103 as being unpatentable Ouderkirk (US 2022/0276483 A1) in further in view of Kawakami et al., (hereafter Kawakami) (US 2007/0172697 A1), as best understood. With respect to Claim 5, Ouderkirk teaches the graphene-based optical bistable device with a ternary photonic crystal structure according to claim 1, and the graphene layer G. Ouderkirk fails to teach wherein thresholds and a threshold difference of the bistable device are controlled by a Fermi level, relaxation time, and a layer quantity of the graphene layer G. Ouderkirk teaches a deformable lens and Kawakami teaches a switching element which can be used with the lens. Kawakami teaches wherein thresholds and a threshold difference (Table 1 and ¶[0074]) of the bistable device (Figure 1) are controlled by a Fermi level (¶[0074]), relaxation time (¶[0074]), and a layer quantity of the graphene layer G (Table 1). Therefore, it would have been obvious to one skilled in the art before the effective date of the invention to modify the teachings of Ouderkirk having the graphene-based optical bistable device with a ternary photonic crystal structure with the teachings of Kawakami having the thresholds and a threshold difference of the bistable device are controlled by a Fermi level, relaxation time, and a layer quantity of the graphene layer G for the purpose of energy shifts. With respect to Claim 6, Ouderkirk teaches the graphene-based optical bistable device with a ternary photonic crystal structure according to claim 1. Ouderkirk fails to teach wherein thresholds and a threshold difference of the bistable device are controlled by a plasma electron density of the dielectric layer P. Ouderkirk teaches a deformable lens and Kawakami teaches a switching element which can be used with the lens. Kawakami teaches wherein thresholds and a threshold difference (Table 1 and ¶[0074]) of the bistable device (Figure 1) are controlled by a plasma electron density (¶[0074]) of the dielectric layer P (Table 1). Therefore, it would have been obvious to one skilled in the art before the effective date of the invention to modify the teachings of Ouderkirk having the graphene-based optical bistable device with a ternary photonic crystal structure with the teachings of Kawakami having thresholds and a threshold difference of the bistable device are controlled by a plasma electron density of the dielectric layer P for the purpose of energy shifts. With respect to Claim 7, Ouderkirk teaches the graphene-based optical bistable device with a ternary photonic crystal structure according to claim 1. Ouderkirk fails to teach wherein thresholds and a threshold difference of the bistable device are controlled by an incident angle of an electromagnetic wave. Ouderkirk teaches a deformable lens and Kawakami teaches a switching element which can be used with the lens. Kawakami teaches wherein thresholds and a threshold difference (Table 1 and ¶[0074]) of the bistable device (Figure 1) are controlled by an incident angle of an electromagnetic wave (¶[0076]). Therefore, it would have been obvious to one skilled in the art before the effective date of the invention to modify the teachings of Ouderkirk having the graphene-based optical bistable device with a ternary photonic crystal structure with the teachings of Kawakami having thresholds and a threshold difference of the bistable device are controlled by an incident angle of an electromagnetic wave for the purpose of energy shifts. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to TAMARA Y WASHINGTON whose telephone number is (571)270-3887. The examiner can normally be reached Mon-Thur 730-530 EST. 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, Stephone Allen can be reached at 571-272-2434. 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. /TYW/Patent Examiner, Art Unit 2872 /STEPHONE B ALLEN/Supervisory Patent Examiner, Art Unit 2872
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Prosecution Timeline

Mar 26, 2024
Application Filed
Jan 28, 2026
Non-Final Rejection — §102, §103, §112 (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

1-2
Expected OA Rounds
81%
Grant Probability
89%
With Interview (+8.0%)
2y 9m
Median Time to Grant
Low
PTA Risk
Based on 571 resolved cases by this examiner. Grant probability derived from career allow rate.

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