Prosecution Insights
Last updated: April 19, 2026
Application No. 18/546,733

ANTIBACTERIAL AND MINERALIZING COMPOSITIONS AND METHODS OF USE THEREOF

Non-Final OA §102§112
Filed
Aug 16, 2023
Examiner
WEBB, WALTER E
Art Unit
1612
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
The University of Hong Kong
OA Round
1 (Non-Final)
46%
Grant Probability
Moderate
1-2
OA Rounds
3y 0m
To Grant
66%
With Interview

Examiner Intelligence

Grants 46% of resolved cases
46%
Career Allow Rate
454 granted / 977 resolved
-13.5% vs TC avg
Strong +19% interview lift
Without
With
+19.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
60 currently pending
Career history
1037
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
48.3%
+8.3% vs TC avg
§102
18.8%
-21.2% vs TC avg
§112
15.4%
-24.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 977 resolved cases

Office Action

§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 . 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. Claim 9 is 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. Regarding claim 9, the term "preferably" renders the claim indefinite because it is unclear whether the limitation(s) following the phrase are part of the claimed invention. 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. Claim(s) 1-3, 7-11 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Zhou et al., (Aplied Materials & Interfaces, 2019, cited in IDS). Zhou et al. teaches, “In this study, we grafted the Sp moiety onto the N-terminus of H5 to construct the bioactive molecule phosphoserine-histatin 5 (Sp-H5). The following bioactive properties of Sp-H5 were evaluated in vitro: (1) binding affinity to the tooth surface, (2) anti-biofouling activity, (3) demineralization and remineralization ability of Sp-H5, and (4) biocompatibility. Finally, we calculated accurate kinetic information for the bioactive ability of Sp-H5 to explain its functional mechanisms” (p. 4, last paragraph). Sp-H5 has the following sequence: phosphoserine-DSHAKRHHGYKRKFHEKHHSHRGY (p. 4, Materials and Methods), which is comprised of a long, amino acid chain, and thus qualifies as a modified histatin 5 protein. Concerning claims 7-11, the prior art teaches an oral care composition insofar as it teaches, “After sterilization, the tooth slices were immersed in sterilized solutions of Sp-H5 (16x MIC, n=7; 100 µL/well)” (p. 9, section 2.7.2). The prior art is anticipatory insofar as it teaches an isolated peptide comprising a histatin 5 segment and a phosphoserine domain, wherein the phosphoserine is phosphorylated serine. Allowable Subject Matter Claims 12-16 are allowed. Claims 4-6 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. Conclusion 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. Any inquiry concerning this communication or earlier communications from the examiner should be directed to WALTER E WEBB whose telephone number is (571)270-3287 and fax number is (571) 270-4287. The examiner can normally be reached from Mon-Fri 7-3:30. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Sahana Kaup can be reached (571) 272-6897. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Walter E. Webb /WALTER E WEBB/Primary Examiner, Art Unit 1612
Read full office action

Prosecution Timeline

Aug 16, 2023
Application Filed
Jan 23, 2026
Non-Final Rejection — §102, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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STABLE GEL COMPOSITION HAVING HIGH OIL CONTENT, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
2y 5m to grant Granted Mar 24, 2026
Patent 12570932
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2y 5m to grant Granted Mar 10, 2026
Patent 12564657
MOULDABLE ARTIFICIAL BONE COMPOSITE MATERIAL AND PREPARATION METHOD THEREOF
2y 5m to grant Granted Mar 03, 2026
Patent 12564544
THICKENED ALKALYZATION COMPONENT FOR OXIDATIVE HAIR LIGHTENING PRODUCT
2y 5m to grant Granted Mar 03, 2026
Patent 12551425
AQUEOUS ZINC ORAL CARE COMPOSITIONS WITH FLUORIDE
2y 5m to grant Granted Feb 17, 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
46%
Grant Probability
66%
With Interview (+19.0%)
3y 0m
Median Time to Grant
Low
PTA Risk
Based on 977 resolved cases by this examiner. Grant probability derived from career allow rate.

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