Prosecution Insights
Last updated: April 19, 2026
Application No. 18/543,802

Masonry Square

Non-Final OA §103
Filed
Dec 18, 2023
Examiner
GUADALUPE, YARITZA
Art Unit
2855
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Kapro Industries Ltd.
OA Round
1 (Non-Final)
82%
Grant Probability
Favorable
1-2
OA Rounds
2y 3m
To Grant
97%
With Interview

Examiner Intelligence

Grants 82% — above average
82%
Career Allow Rate
943 granted / 1143 resolved
+14.5% vs TC avg
Moderate +15% lift
Without
With
+14.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
20 currently pending
Career history
1163
Total Applications
across all art units

Statute-Specific Performance

§101
0.9%
-39.1% vs TC avg
§103
37.8%
-2.2% vs TC avg
§102
47.5%
+7.5% vs TC avg
§112
7.1%
-32.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1143 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 . Priority Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. Information Disclosure Statement The information disclosure statement (IDS) submitted on December 18, 2023 and April 11, 2025 were filed in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement is being considered by the examiner. Drawings The replacement drawings filed March 2, 2024 are accepted. Abstract The Abstract filed December 18, 2023 is accepted. Specification The specification filed December 18, 2023 has been entered. 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. Claims 1 – 7 are rejected under 35 U.S.C. 103 as being unpatentable over Allemand (US 6,868,616) in view of Zenke (US 3,327,395) With respect to claim 1, Allemand discloses a masonry square comprising a generally isosceles right angle body (2) with two sides meeting at a right angle (where ends 8 and 12 meet) and a hypotenuse (30) opposite said right angle, and a top surface and a bottom surface, a side of said two sides is formed with a base (32), said body (2) is formed with an elongated notched slot (50) along the other side of said two sides, said top surface includes a marking PIVOT (9) at said right angle, said top surface and said bottom surface are both marked with protractor angles (42) along said hypotenuse, and a modular spacing rule (74) deployed along said base of one surface of said top surface and said bottom surface. PNG media_image1.png 514 764 media_image1.png Greyscale Allemand does not disclose the oversized brick spacing rule or the standard brick spacing rule as recited in claim 1. Zenke discloses a mason’s tool comprising an oversize brick spacing rule (Figure 8) deployed along the base and a standard brick spacing rule (Figure 7) deployed along said other side of said two sides on one surface in order to facilitate brick placement and spacing of successive rows of brick. Therefore, it would have been obvious to a person having ordinary skill in the art before the effective filing date of the invention to modify the masonry square disclosed by Allemand by adding oversize and standard brick spacing indicia, as taught by Zenke, in order to facilitate brick placement and spacing of successive rows of brick. Referring to claim 2, Allemand sets forth a masonry square wherein said top surface includes said modular spacing rule. Zenke discloses the benefits of including various brick spacing rules along the edges of the tool to facilitate brick placement. Therefore, it would have been obvious to a person having ordinary skill in the art before the effective filing date of the invention to modify Allemand by providing said standard brick spacing rule along the top surface, since Allemand already teaches the benefits of providing various commonly used construction indicia. In regards to claim 3, the combination of Allemand and Zenke teaches a masonry square wherein said top surface includes said modular spacing rule (74) and said standard rule (as modified above). Regarding claim 4, the combination of Allemand and Zenke shows a masonry square wherein said top surface includes said oversized brick spacing rule and said standard brick spacing rule (as modified above). With regards to claim 5, the combination of Allemand and Zenke discloses a masonry square wherein said top surface includes said oversized brick spacing rule and said standard rule. Therefore, it would have been obvious to a person having ordinary skill in the art before the effective filing date of the invention to modify Allemand by providing said oversize brick spacing rule and standard rule along the top surface, since Allemand already teaches the benefits of providing various commonly used construction indicia. Referring to claim 6, the combination of Allemand and Zenke sets forth a masonry square for use with imperial sized bricks (See Zenke specification below, which suggests various sizes and modifications to the tool based on brick size). PNG media_image2.png 202 906 media_image2.png Greyscale In regards to claim 7, the combination of Allemand and Zenke teaches a masonry square for use with metric sized bricks (See Zenke specification below, which suggests various sizes and modifications to the tool based on brick size). PNG media_image2.png 202 906 media_image2.png Greyscale Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. The following references are considered relevant but fail to teach the combination as claimed: Jones (US 11,692,803) discloses a multifunctional speed square but fails to teach the standard and oversize brick rule. Agular et al. (US D454,080 S) discloses a combination square but fails to teach the pivot and standard/oversize brick rule. Any inquiry concerning this communication or earlier communications from the examiner should be directed to YARITZA GUADALUPE-MCCALL whose telephone number is (571)272-2244. The examiner can normally be reached Mon -Thu, 8:00am - 6:00pm. 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, Laura E Martin can be reached at 571-272-2160. 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. YARITZA GUADALUPE-MCCALL Primary Examiner Art Unit 2855 January 17, 2026 /YARITZA GUADALUPE-MCCALL/Primary Examiner, Art Unit 2855
Read full office action

Prosecution Timeline

Dec 18, 2023
Application Filed
Jan 17, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

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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
82%
Grant Probability
97%
With Interview (+14.6%)
2y 3m
Median Time to Grant
Low
PTA Risk
Based on 1143 resolved cases by this examiner. Grant probability derived from career allow rate.

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