Prosecution Insights
Last updated: April 19, 2026
Application No. 18/604,478

PET-USE ABSORBENT SHEET

Non-Final OA §103
Filed
Mar 13, 2024
Examiner
KIDWELL, MICHELE M
Art Unit
3781
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Kocho Co. Ltd.
OA Round
1 (Non-Final)
64%
Grant Probability
Moderate
1-2
OA Rounds
3y 11m
To Grant
84%
With Interview

Examiner Intelligence

Grants 64% of resolved cases
64%
Career Allow Rate
742 granted / 1163 resolved
-6.2% vs TC avg
Strong +20% interview lift
Without
With
+19.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 11m
Avg Prosecution
51 currently pending
Career history
1214
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
46.9%
+6.9% vs TC avg
§102
23.8%
-16.2% vs TC avg
§112
15.0%
-25.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1163 resolved cases

Office Action

§103
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 § 103 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. Claims 1-3 are rejected under 35 U.S.C. 103 as being unpatentable over Sasano et al. (US 2020/0288665) and further in view of Mitchell et al. (US 2005/0031850). With reference to claim 1, Sasano et al. (hereinafter “Sasano”) discloses a pet-use absorbent sheet (abstract) comprising: a liquid-permeable top side layer (12); a liquid-impermeable backside layer (14); an absorption member (20) arranged between the top side layer and the backside layer [0042] and configured to absorb a liquid that permeated through the top side layer; and a tissue layer (33a) arranged between the top side layer and the absorption member [0044], wherein a portion where the top side layer and the tissue layer cover the absorption member has an unevenness part (figure 4), wherein the absorption member contains a pulp material and a water-absorbent polymer material as set forth in [0045]. The difference between Sasano and claim 1 is the provision that the ratio of the weight of the water-absorbent polymer material to the weight of the pulp material in the absorption member is less than 1. Mitchell et al. (hereinafter “Mitchell”) teaches an analogous pet mat [0002] wherein the ratio of the weight of the water-absorbent polymer material to the weight of the pulp material in the absorption member is less than 1 as set forth in [0211] where Mitchell discloses that the core may include up to 100% of an SAP. It would have been obvious to one of ordinary skill in the art at the time of the invention to adjust the ratio of Sasano utilizing the ratio as taught by Mitchell in order to provide an overall thinner product as taught by Mitchell in [0211]. As to claim 2, Sasano discloses a pet-use absorbent sheet wherein the unevenness part is formed of a recess and a protrusion, and the recess is configured to allow a liquid to flow in the recess as set forth in [0049]. Regarding claim 3, Sasano discloses a pet-use absorbent sheet wherein a tissue layer (33b) is further arranged between the absorption member and the backside layer as set forth in [0044] and as shown in figure 4. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Takahashi et al. (US 2009/0000561) discloses an animal waste collection sheet. Any inquiry concerning this communication or earlier communications from the examiner should be directed to MICHELE M KIDWELL whose telephone number is (571)272-4935. The examiner can normally be reached Monday-Friday, 7AM-4PM 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, Rebecca Eisenberg can be reached at 571-270-5879. 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. /MICHELE KIDWELL/Primary Examiner, Art Unit 3781
Read full office action

Prosecution Timeline

Mar 13, 2024
Application Filed
Feb 08, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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CAT DIAPER
2y 5m to grant Granted Apr 14, 2026
Patent 12599181
MOISTURE LOCK FLUID RETENTION ASSEMBLIES, GARMENTS INCLUDING THE SAME, AND RELATED METHODS
2y 5m to grant Granted Apr 14, 2026
Patent 12589022
FLUID COLLECTION ASSEMBLIES INCLUDING ONE OR MORE MOVEMENT ENHANCING FEATURES
2y 5m to grant Granted Mar 31, 2026
Patent 12582561
ABSORBENT ARTICLES WITH FRANGIBLE PATHWAYS WITH SIMULTANEOUSLY PROPAGATING TEAR ZONES
2y 5m to grant Granted Mar 24, 2026
Patent 12582562
ABSORBENT ARTICLES WITH FRANGIBLE PATHWAYS ADAPTED FOR TEAR PROPAGATION BETWEEN REGIONS OF LAMINATES HAVING DIFFERENT NUMBERS OF LAYERS OF SUBSTRATES
2y 5m to grant Granted Mar 24, 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
64%
Grant Probability
84%
With Interview (+19.7%)
3y 11m
Median Time to Grant
Low
PTA Risk
Based on 1163 resolved cases by this examiner. Grant probability derived from career allow rate.

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