Prosecution Insights
Last updated: July 17, 2026
Application No. 18/169,326

OXAZINE DYES AND THEIR USE IN NUCLEIC ACID AMPLIFICATION REACTIONS

Non-Final OA §102§112
Filed
Feb 15, 2023
Priority
Feb 16, 2022 — provisional 63/310,796
Examiner
WARD, PAUL V
Art Unit
1622
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Promega Corporation
OA Round
2 (Non-Final)
83%
Grant Probability
Favorable
2-3
OA Rounds
0m
Est. Remaining
72%
With Interview

Examiner Intelligence

Grants 83% — above average
83%
Career Allowance Rate
1408 granted / 1692 resolved
+23.2% vs TC avg
Minimal -12% lift
Without
With
+-11.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
36 currently pending
Career history
1716
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
29.6%
-10.4% vs TC avg
§102
8.5%
-31.5% vs TC avg
§112
42.9%
+2.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1692 resolved cases

Office Action

§102 §112
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 STATUS OF THE CLAIMS: Claims 1-4, 7-10, 13-19, 42, 63-65, 68 and 70 are pending in this application. Election/Restrictions Applicant's election of species in the reply filed on September 3, 2025 is acknowledged. All claims were examined. Claim Rejections - 35 USC § 112, second paragraph 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 1-4, 7-10, 13-19, 42, 63-65, 68 and 70 (including claims dependent thereon and claims that relate back to dependent claims) 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 pre-AIA the applicant regards as the invention. (a) Claims 1, 3, 7-10, 13, 19, and 42 are defined variables (where applicable) as heteroaryl, heteroalkyl, heterocyclic, and/or aryl. The terms are indefinite since the specification does not define the ring size, heteroatom, number and nature of substituents, and the exact point of contact with the atom(s) for the substituents. Correction is required. (b) Claim 65 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph for reciting reaction mixture. The claim is indefinite because the claim does not include elements disclosed (i.e., what reaction mixture), thereby rendering the scope of the claim unascertainable. See MPEP § 2173.05(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. Claims 1, 2, 4, 8-9 and 15 rejected under 35 U.S.C. 102(a)(1) as being anticipated by Dhammika et al. (J’nal of Org. Chem.’2017). This reference discloses compounds on pages 8199-8205. (See Abstract and entire document). These compounds read on the instant claim. Since this reference teaches the exact compounds, Applicant’s claims are anticipated, and thus, rejected under 35 U.S.C. 102. Claims 1-3, 8-12, and 14-15 rejected under 35 U.S.C. 102(a)(1) as being anticipated by Anzalone et al. (ACI Verlag Chemie, Hoboken’2012). This reference discloses compounds on pages 650-653. (See Abstract and entire document). These compounds read on the instant claim. Since this reference teaches the exact compounds, Applicant’s claims are anticipated, and thus, rejected under 35 U.S.C. 102. Claims 1, 2, 4-6, 8, 10-11 and 14-15 rejected under 35 U.S.C. 102(a)(1) as being anticipated by Kolmakov et al. (Chem, Eur. J’nal’2015). This reference discloses compounds on pages 650-653. (See Abstract and entire document). These compounds read on the instant claim. Since this reference teaches the exact compounds, Applicant’s claims are anticipated, and thus, rejected under 35 U.S.C. 102. Claims 1, 2, 4-6, 8-9, 10, 14-15, 19, 42, 63-65, 68 and 70 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Schoetzau et al. (J’nal Chem. Soc., PT’2000). This reference discloses compounds on pages 1411-1415. (See Abstract and entire document). These compounds read on the instant claim. Since this reference teaches the exact compounds, Applicant’s claims are anticipated, and thus, rejected under 35 U.S.C. 102. Claims 1, 2, 4-6, 8-9, 10, 14-15, 19, 42, 63-65, 68 and 70 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Augustin et al. (J’nal Biotech’2001). This reference discloses compounds on pages 289-301. (See Abstract and entire document). These compounds read on the instant claim. Since this reference teaches the exact compounds, Applicant’s claims are anticipated, and thus, rejected under 35 U.S.C. 102. Claims 1, 2, 4-6, 8-9, 10, 14-15, 19, 42, 63-65, 68 and 70 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Muehlegger et al. (WO00/68422). This reference discloses compounds on pages 1-18. (See Abstract and entire document). These compounds read on the instant claim. Since this reference teaches the exact compounds, Applicant’s claims are anticipated, and thus, rejected under 35 U.S.C. 102. Claims 1, 2, 4-6, 8-9, 10, 14-15, 19, 42, 63-65, 68 and 70 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Beckenkamp et al. (EP2876166). This reference discloses compounds on pages 1-4. (See Abstract and entire document). These compounds read on the instant claim. Since this reference teaches the exact compounds, Applicant’s claims are anticipated, and thus, rejected under 35 U.S.C. 102. Claims 1, 2, 4-6, 8-9, 10, 14-15, 19, 42, 63-65, 68 and 70 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Stolz et al. (Hel.Chim.ACTA, vol. 82’1999). This reference discloses compounds on pages 1311-1319. (See Abstract and entire document). These compounds read on the instant claim. Since this reference teaches the exact compounds, Applicant’s claims are anticipated, and thus, rejected under 35 U.S.C. 102. Claims 1, 2, 4-6, 8, 10-11 and 14-15 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Toutchkine et al. (WO2009/152024). This reference discloses compounds on pages 1-32. (See Abstract and entire document). These compounds read on the instant claim. Since this reference teaches the exact compounds, Applicant’s claims are anticipated, and thus, rejected under 35 U.S.C. 102. Conclusion Claims 1-4, 7-10, 13-19, 42, 63-65, 68 and 70 are pending. Claims 1-4, 7-10, 13-19, 42, 63-65, 68 and 70 are rejected. No claims are allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to PAUL V WARD whose telephone number is (571)272-2909. The examiner can normally be reached M-F 9am to 5pm. 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, James Alstrum-Acevedo can be reached at 571-272-5548. 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. /PAUL V WARD/Primary Examiner, Art Unit 1622
Read full office action

Prosecution Timeline

Feb 15, 2023
Application Filed
Nov 26, 2025
Non-Final Rejection mailed — §102, §112
Feb 24, 2026
Response Filed
Jul 14, 2026
Non-Final Rejection mailed — §102, §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

2-3
Expected OA Rounds
83%
Grant Probability
72%
With Interview (-11.5%)
2y 4m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1692 resolved cases by this examiner. Grant probability derived from career allowance rate.

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