Prosecution Insights
Last updated: August 15, 2026
Application No. 19/036,195

AIR DUCT FOR AN ELECTROPHOTOGRAPHIC IMAGE FORMING DEVICE

Final Rejection §102
Filed
Jan 24, 2025
Examiner
AYDIN, SEVAN A
Art Unit
2852
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Lexmark International Inc.
OA Round
2 (Final)
80%
Grant Probability
Favorable
3-4
OA Rounds
3m
Est. Remaining
85%
With Interview

Examiner Intelligence

Grants 80% — above average
80%
Career Allowance Rate
452 granted / 566 resolved
+11.9% vs TC avg
Minimal +5% lift
Without
With
+4.9%
Interview Lift
resolved cases with interview
Fast prosecutor
1y 9m
Avg Prosecution
22 currently pending
Career history
593
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
42.1%
+2.1% vs TC avg
§102
33.7%
-6.3% vs TC avg
§112
19.2%
-20.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 566 resolved cases

Office Action

§102
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 § 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)(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. Claims 1, 2, 6, and 10 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Brown et al., U.S.P.G. Pub. No. 2011/0206408. Applicant has incorporated former claims 3 and 5 into independent claim 1, and former claims 7 and 9 into independent claim 6. Examiner incorporates the rejections of claims 3 and 5 into that of independent claim 1, and former claims 7 and 9 into that of independent claim 6. As previously indicated, “the air duct shares a common wall with the housing” does not mean that the duct has no separate wall there, nor that the housing has no separate wall there. All the claim limitation means is that the walls of each are shared. Brown et al. share the common wall through integration of the duct to the housing. Should Applicants intend to claim that one of the duct or the housing has no wall when separated, Applicants are free to include such in the claims. Examiner has provided references in the Relevant Prior Art section for guidance, should Applicants intend to so claim. Response to Arguments Applicant's arguments filed 4/24/26 have been fully considered but they are not persuasive. Applicant argues: Nothing in Brown describes body 210 as using the cartridge housing wall as one wall of the conduit, much less as using a shared wall portion that simultaneously defines toner-storage volume and an air path. The claims do not require “using the cartridge housing wall as one wall of the conduit”. The features upon which applicant relies are not recited in the rejected claims. Although the claims are interpreted in light of the specification, limitations from the specification are not read into the claims. See In re Van Geuns, 988 F.2d 1181, 26 USPQ2d 1057 (Fed. Cir. 1993). All that the claims require is that “the air duct shares a common wall with the housing”. Brown et al. share at least one wall through integration, so that the two formerly separate walls are commonly shared when integrated. Nothing in the claims prohibits walls from having several integrated layers. One can still interpose a myriad of things between the separate walls, integrate them, and still have them share a common wall. In much the same way, two adjacent rooms in a building can share a common wall, even though there is a crawlspace full of insulation between the separate walls of the adjacent rooms. Again, should Applicants intend to claim that one of the duct or the housing does not have a wall when the two are separated, Applicants are invited to specify as such in the claims, without limiting the intended scope of the present claims. Examiner can only reject the claims as written, rather than as intended to have been written. Examiner has provided references in the Relevant Prior Art section for guidance, should Applicants wish to amend the claims to say what they are intended to mean - using the cartridge housing wall as one wall of the conduit. Relevant Prior Art The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Murakami et al., U.S.P.G. Pub. No. 2011/0222921; and, Hata, U.S.P.G. Pub. No. 2020/0233376; teach providing two components that share a common wall, such that one of the two has no separate wall when the components are separated. 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 SEVAN A AYDIN whose telephone number is (571)270-3209. The examiner can normally be reached M-Th 9AM-6PM PT. 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, Walter Lindsay can be reached at (571) 272-1674. 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. /SEVAN A AYDIN/Primary Examiner, Art Unit 2852
Read full office action

Prosecution Timeline

Jan 24, 2025
Application Filed
Jan 30, 2026
Non-Final Rejection mailed — §102
Apr 24, 2026
Response Filed
Jul 29, 2026
Final Rejection mailed — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12704802
HEATING DEVICE AND IMAGE FORMING APPARATUS
1y 2m to grant Granted Aug 11, 2026
Patent 12693624
DEVELOPING CARTRIDGE
1y 8m to grant Granted Jul 28, 2026
Patent 12693612
CARTRIDGE, IMAGE FORMING APPARATUS, DEVELOPING APPARATUS, AND TONER CARTRIDGE
1y 5m to grant Granted Jul 28, 2026
Patent 12681416
FIXING DEVICE AND IMAGE FORMING APPARATUS
3y 2m to grant Granted Jul 14, 2026
Patent 12681413
FIXING APPARATUS
2y 2m to grant Granted Jul 14, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

3-4
Expected OA Rounds
80%
Grant Probability
85%
With Interview (+4.9%)
1y 9m (~3m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 566 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month