Prosecution Insights
Last updated: July 17, 2026
Application No. 18/548,993

TOILET RIM BLOCKS WITH SCENT CHANGE

Final Rejection §103
Filed
Sep 05, 2023
Priority
Mar 03, 2021 — nonprovisional of PCTEP2021055285
Examiner
MRUK, BRIAN P
Art Unit
1761
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Symrise AG
OA Round
4 (Final)
74%
Grant Probability
Favorable
5-6
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 74% — above average
74%
Career Allowance Rate
977 granted / 1315 resolved
+9.3% vs TC avg
Strong +28% interview lift
Without
With
+27.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 2m
Avg Prosecution
41 currently pending
Career history
1365
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
59.2%
+19.2% vs TC avg
§102
1.7%
-38.3% vs TC avg
§112
7.1%
-32.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1315 resolved cases

Office Action

§103
DETAILED ACTION This Office action is in response to Applicant’s amendment filed March 12, 2026. Applicant has amended claim 5. Currently, claims 1-3, 5-7 and 10-14 remain pending in the application. The text of those sections of Title 35 U.S. Code not included in this action can be found in the prior Office actions, Paper Nos. 20250805, 20251029 and 20260210. The rejection of claim 5 under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, is withdrawn in view of applicant’s amendments and remarks. The rejection of claims 1-3, 5-7 and 10-14 under 35 U.S.C. 102((a)(1)) as anticipated by or, in the alternative, under 35 U.S.C. 103 as obvious over Conboy et al, US 2002/0123437, is maintained for the reasons of record. Response to Arguments Applicant's arguments filed March 12, 2026 have been fully considered but they are not persuasive. Applicant argues that Conboy et al, US 2002/0123437, does not teach or suggest in general a first fragrance that represents 15-60% by weight of the total fragrances, as required by applicant in the instant claims. However, the examiner respectfully disagrees. Specifically, the examiner respectfully maintains that Conboy et al clearly discloses that their composition cyclohexadecanone in an amount of up to 50% by weight (see paragraph 24), per the requirements of the instant invention. Applicant further argues that Conboy et al, US 2002/0123437, does not teach or suggest in general a first fragrance having a boiling point from about 270 to about 400 degrees Celsius, as required by applicant in the instant claims. However, the examiner respectfully disagrees. Specifically, the examiner respectfully maintains that Conboy et al clearly discloses that their composition contains cyclohexadecanone (see paragraph 24), and, as evidenced by McGinty et al, “Food and Chemical Toxicology”, Volume 49, Supplement 2, that cyclohexadecanone has a boiling point of 339.75 degrees Celsius (see page 3 of Food and Chemical Toxicology, Volume 49, Supplement 2), per the requirements of the instant invention. Applicant further argues that Conboy et al, US 2002/0123437, does not teach or suggest in general a solid detergent composition, as required by applicant in the instant claims. However, the examiner respectfully disagrees. Specifically, the examiner respectfully maintains that Conboy et al clearly discloses that the composition is in the form of a solid (see paragraphs 25 and 28), per the requirements of the instant invention. Furthermore, the examiner asserts that Conboy et al clearly discloses that the composition is used in a process to clean toilets (see paragraph 21), per the requirements of the instant invention. Also, the examiner asserts that claim 10 recites that the composition is a toilet rim block or a solid detergent composition, and as stated above, Conboy et al clearly teaches solid compositions. Applicant further argues that Conboy et al, US 2002/0123437, does not teach or suggest in general contacting the fragrance composition with water, as required by applicant in the instant claims. However, the examiner respectfully disagrees. Specifically, the examiner respectfully maintains that Conboy et al clearly discloses that their composition is mixed with water (see paragraph 29), per the requirements of the instant invention. Applicant further argues that Conboy et al, US 2002/0123437, does not teach or suggest in general a composition that contains a solid water soluble carrier, as required by applicant in the instant claims. However, the examiner respectfully disagrees. Specifically, the examiner respectfully maintains that Conboy et al clearly discloses that their composition contains 10-50% by weight of a carrier, such as a polysaccharide (see paragraph 27), per the requirements of the instant invention. Conclusion THIS ACTION IS MADE FINAL. Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to BRIAN P MRUK whose telephone number is (571)272-1321. The examiner can normally be reached on 7:00am-5:30pm Monday-Thursday. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Angela Brown-Pettigrew, can be reached on 571-272-2817. 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). 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. /BRIAN P MRUK/ Primary Examiner, Art Unit 1761 Brian P Mruk May 8, 2026
Read full office action

Prosecution Timeline

Show 4 earlier events
Dec 16, 2025
Response after Non-Final Action
Jan 12, 2026
Request for Continued Examination
Jan 14, 2026
Response after Non-Final Action
Feb 13, 2026
Non-Final Rejection mailed — §103
Mar 12, 2026
Response Filed
May 12, 2026
Final Rejection mailed — §103
Jul 15, 2026
Examiner Interview Summary
Jul 15, 2026
Applicant Interview (Telephonic)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12680057
FABRIC CARE COMPOSITION
2y 5m to grant Granted Jul 14, 2026
Patent 12673793
METHOD AND SYSTEM FOR MANUFACTURING A SHEET OF LAUNDRY DETERGENT
3y 3m to grant Granted Jul 07, 2026
Patent 12674118
STABLE ANHYDROUS DISH SOAP AND METHOD OF MAKING SAME
3y 0m to grant Granted Jul 07, 2026
Patent 12662651
Soap Composition
4y 1m to grant Granted Jun 23, 2026
Patent 12655365
LOW FOAM CLEANING COMPOSITIONS
5y 1m to grant Granted Jun 16, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

5-6
Expected OA Rounds
74%
Grant Probability
99%
With Interview (+27.6%)
2y 2m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 1315 resolved cases by this examiner. Grant probability derived from career allowance rate.

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