Prosecution Insights
Last updated: April 19, 2026
Application No. 18/026,602

ACTIVATED CARBON AND WATER TREATMENT METHOD USING SAID ACTIVATED CARBON

Non-Final OA §103
Filed
Mar 16, 2023
Examiner
PEO, KARA M
Art Unit
1777
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Kuraray Co. Ltd.
OA Round
1 (Non-Final)
42%
Grant Probability
Moderate
1-2
OA Rounds
4y 7m
To Grant
84%
With Interview

Examiner Intelligence

Grants 42% of resolved cases
42%
Career Allow Rate
143 granted / 341 resolved
-23.1% vs TC avg
Strong +42% interview lift
Without
With
+42.1%
Interview Lift
resolved cases with interview
Typical timeline
4y 7m
Avg Prosecution
59 currently pending
Career history
400
Total Applications
across all art units

Statute-Specific Performance

§101
3.3%
-36.7% vs TC avg
§103
43.4%
+3.4% vs TC avg
§102
13.4%
-26.6% vs TC avg
§112
33.2%
-6.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 341 resolved cases

Office Action

§103
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 . Election/Restrictions Applicant's election with traverse of group I, reading on claims 1-3 and 8, in the reply filed on 12/1/2025 is acknowledged. The traversal is on the ground(s) that the groups have an overlapping search. This is not found persuasive because the restriction is made based on Requirement for Unity of Invention; the groups lack unity of invention because they require a specifical technical feature which does not make a contribution over the prior art (see rejection below). The requirement is still deemed proper and is therefore made FINAL. Claims 4-7 and 9-12 are withdrawn from further consideration pursuant to 37 CFR 1.142(b), as being drawn to a nonelected groups, there being no allowable generic or linking claim. Applicant timely traversed the restriction (election) requirement in the reply filed on 12/1/2025. 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. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claims 1-3 and 8 are rejected under 35 U.S.C. 103 as being unpatentable over U.S. Patent Publication No. 2017/0309923 by Mihara et al. (Mihara). In regard to claim 1, Mihara teaches an activated carbon having an average particle diameter of 0.1 to 10 mm ([0072], 5000 µm reads on 5 mm), a BET specific surface area of 500 m2/g or more and 2000 m2/g or less ([0034]). Mihara teaches a porosity inside a particle of 10% or more and 40% or less as obtained by X-ray CT ([0024]). It would have been obvious to one of ordinary skill in the art at the time of invention to have selected the overlapping portion of the ranges disclosed by the reference because selection of overlapping portion of ranges has been held to be a prima facie case of obviousness. In re Malagari, 182 USPQ 549. Regarding limitations recited in claim 2 which are directed to specific properties of activated carbon recited in said claim, it is noted that once an activated carbon is disclosed to comprise a material comprising an average particle diameter of 0.1 to 10 mm, a BET surface area of 500 m2/g or more and 2000 m2/g or less and a porosity inside a particle of 10% or more and 40% or less, and therefore is the same as the activated carbon of claim 2, it will, inherently, display recited properties. See MPEP 2112. Regarding limitations recited in claims 3 and 8, which are directed to method of making said activated carbon (e.g. “coal is used as a raw material of the activated carbon”) it is noted that said limitations are not given patentable weight in the product claims. Even though a product-by-process is defined by the process steps by which the product is made, determination of patentability is based on the product itself and does not depend on its method of production. In re Thorpe, 777 F.2d 695, 227 USPQ 964 (Fed. Cir. 1985). As the court stated in Thorpe, 777 F.2d at 697, 227 USPQ at 966 (The patentability of a product does not depend on its method of production. In re Pilkington, 411 F.2d 1345, 1348, 162 USPQ 145, 147 (CCPA 1969). If the product in a product-by-process claim is the same or obvious as the product of the prior art, the claim is unpatentable even though the prior art product was made by a different process.). See MPEP 2113 and 2114. Therefore, since the activated carbon as recited in claims 3 and 8 is the same as the activated carbon disclosed by Mihara, as set forth above, the claim is unpatentable even though the activated carbon of Mihara was made by a different process. In re Marosi, 710 F2d 798, 802, 218 USPQ 289, 292 (Fed. Cir. 1983). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to KARA M PEO whose telephone number is (571)272-9958. The examiner can normally be reached 9 to 5:30. 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, Claire Wang can be reached at 571-270-1051. 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. /KARA M PEO/Primary Examiner, Art Unit 1777
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Prosecution Timeline

Mar 16, 2023
Application Filed
Feb 02, 2026
Non-Final Rejection — §103 (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

1-2
Expected OA Rounds
42%
Grant Probability
84%
With Interview (+42.1%)
4y 7m
Median Time to Grant
Low
PTA Risk
Based on 341 resolved cases by this examiner. Grant probability derived from career allow rate.

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