Prosecution Insights
Last updated: August 06, 2026
Application No. 18/605,296

FILTER DEVICES FOR ADDITIVE MANUFACTURING APPARATUSES

Non-Final OA §103
Filed
Mar 14, 2024
Examiner
SHUMATE, ANTHONY R
Art Unit
1773
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Concept Laser GmbH
OA Round
1 (Non-Final)
70%
Grant Probability
Favorable
1-2
OA Rounds
5m
Est. Remaining
84%
With Interview

Examiner Intelligence

Grants 70% — above average
70%
Career Allowance Rate
500 granted / 717 resolved
+4.7% vs TC avg
Moderate +14% lift
Without
With
+14.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
10 currently pending
Career history
731
Total Applications
across all art units

Statute-Specific Performance

§101
2.1%
-37.9% vs TC avg
§103
37.1%
-2.9% vs TC avg
§102
24.9%
-15.1% vs TC avg
§112
29.5%
-10.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 717 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 . DETAILED ACTION Summary This is the initial Office action based on the 18605296 application filed 03/14/24 Claim(s) 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20 are pending and claim(s) 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20 have been fully considered 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. Claim(s) 1, 2, 3, 4, 7, 19 is/are rejected under 35 U.S.C. 103 as being unpatentable over CN109107291A (herein known as ZHANG) in view of US 20200406182 (herein known as GRIEVE) With regard to claim 1, ZHANG sufficiently teaches a filter device 9 comprising: , especially at para 25, fig a filter device inlet that capable of receiving a non-specific processable medium from an additive manufacturing apparatus, especially at para 1,25, fig; Apparatus claims must be structurally distinguishable from the prior art in terms of structure, not function. The manner of operating an apparatus does not differentiate an apparatus claim from the prior art, if the prior art apparatus teaches all of the structural limitations of the claim (see MPEP § 2114 & § 2173.05(g)) a filter module 4 that separates particulates and inert gas from the processable medium, especially at para 25, fig a filter housing (as depicted) with a "air pipe" (i.e. filter housing inlet) that is fluidly connected to the filter device inlet that is capable of receiving the processable medium, especially at para 25,26, fig a primary filter 9 mounted within an interior of the filter housing (as depicted), especially at para 25,26, fig a nozzle 10 mounted to the filter housing and at least partially positioned within the primary filter (as depicted), especially at para 25,26, fig ZHANG does not specifically teach a rotatable nozzle But, GRIEVE sufficiently teaches a rotatable nozzle, especially at abstract, fig 5, para 50 It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention (or at the time the invention was made; if pre-AIA ) to provide ZHANG with a rotatable nozzle of GRIEVE teaches that stationary vs rotational nozzle are art-recognized as interchangeable, especially at GRIEVE para 48-50 ZHANG sufficiently teaches wherein the nozzle capable of ejecting a cleaning gas in a radial direction toward the primary filter during a cleaning operation (as depicted), especially at para 25,26, fig a collection container 6 fluidly connected to the filter housing, especially at para 25,26, fig a filter device inert gas outlet (generally 11) that discharges the inert gas, especially at para 25,26, fig With regard to claim 2, ZHANG sufficiently teaches a nozzle arm extending within the primary filter (as depicted), especially at para 25,26, fig a nozzle inlet that provides the cleaning gas to the nozzle arm (as depicted), especially at para 25,26, fig With regard to claim 3, ZHANG sufficiently teaches wherein the rotatable nozzle comprises a pair of nozzle arms (as depicted), especially at para 25,26, fig a plurality of nozzle arm outlets are distributed over the pair of nozzle arms capable of dispersing the cleaning gas, especially at para 25,26, fig With regard to claim 4, ZHANG sufficiently teaches the cylindrical shape (thereby, in combination within the scope of the primary filter and the rotatable nozzle are concentrically aligned about a center axis), especially at wherein the primary filter and the rotatable nozzle are concentrically aligned about a center axis (as depicted), especially at para 25,26, fig; in an alternative, ZHANG does not specifically teach a cylindrical primary filter It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention (or at the time the invention was made; if pre-AIA ) to provide of ZHANG with the cylindrical shape (thereby, in combination within the scope of the primary filter and the rotatable nozzle are concentrically aligned about a center axis) of ZHANG since a cylinder is an elongated circle and a circle is the most efficient two dimensional shape as for providing space and conserving material With regard to claim 7, ZHANG sufficiently teaches the cylindrical shape (thereby, in combination within the scope of the primary filter and the rotatable nozzle are concentrically aligned about a center axis), especially at wherein the primary filter and the rotatable nozzle are concentrically aligned about a center axis (as depicted), especially at para 25,26, fig; in an alternative, ZHANG does not specifically teach a cylindrical primary filter It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention (or at the time the invention was made; if pre-AIA ) to provide of ZHANG with the cylindrical shape (thereby, in combination within the scope of the primary filter and the rotatable nozzle are concentrically aligned about a center axis) of ZHANG since a cylinder is an elongated circle and a circle is the most efficient two dimensional shape as for providing space and conserving material Claim(s) 8, 18, 19 is/are rejected under 35 U.S.C. 103 as being unpatentable over CN109107291A (herein known as ZHANG) in view of US 20200406182 (herein known as GRIEVE) and US 20190022940 (herein known as HOFMANN) With regard to claim 8, ZHANG does not specifically teach a passivation system fluidly connected to at least one of the filter housing and the collection container. But, HOFMANN sufficiently teaches a passivation system fluidly connected to at least one of the filter housing and the collection container, especially at claims 9,18,21, para 45, fig 4 It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention (or at the time the invention was made; if pre-AIA ) to provide ZHANG -GRIEVE with a passivation system fluidly connected to at least one of the filter housing and the collection container. of HOFMANN to improve the safety and operability of CN109107291A With regard to claim 18, ZHANG sufficiently teaches a filter device 9 comprising: , especially at para 25, fig a filter device inlet that capable of receiving a non-specific processable medium from an additive manufacturing apparatus, especially at para 1,25, fig; Apparatus claims must be structurally distinguishable from the prior art in terms of structure, not function. The manner of operating an apparatus does not differentiate an apparatus claim from the prior art, if the prior art apparatus teaches all of the structural limitations of the claim (see MPEP § 2114 & § 2173.05(g)) a filter module 4 that separates particulates and inert gas from the processable medium, especially at para 25, fig a filter housing (as depicted) with an "air pipe" (i.e. filter housing inlet) that is fluidly connected to the filter device inlet that is capable of receiving the processable medium, especially at para 25,26, fig a primary filter 9 mounted within an interior of the filter housing (as depicted), especially at para 25,26, fig a nozzle 10 mounted to the filter housing and at least partially positioned within the primary filter (as depicted), especially at para 25,26, fig ZHANG does not specifically teach a rotatable nozzle But, GRIEVE sufficiently teaches a rotatable nozzle , especially at abstract, fig 5, para 50 It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention (or at the time the invention was made; if pre-AIA ) to provide ZHANG with a rotatable nozzle of GRIEVE teaches that stationary vs rotational nozzle are art-recognized as interchangeable, especially at GRIEVE para 48-50 ZHANG does not specifically teach a passivation system fluidly connected to at least one of the filter housing But, HOFMANN sufficiently teaches a passivation system fluidly connected to at least one of the filter housing , especially at claims 9,18,21, para 45 It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention (or at the time the invention was made; if pre-AIA ) to provide ZHANG with a passivation system fluidly connected to at least one of the filter housing of HOFMANN to improve the safety and operability of CN109107291A With regard to claim 19, ZHANG sufficiently teaches a pair of nozzle arms extending within the primary filter (as depicted), especially at para 25,26, fig implicit a nozzle inlet that capable of providing a cleaning gas, especially at para 25,26, fig a plurality of nozzle arm outlets are distributed over the pair of nozzle arms capable of dispersing the cleaning gas, especially at para 25,26, fig the cylindrical shape (thereby, in combination within the scope of the primary filter and the rotatable nozzle are concentrically aligned about a center axis), especially at wherein the primary filter and the rotatable nozzle are concentrically aligned about a center axis (as depicted), especially at para 25,26, fig; in an alternative, ZHANG does not specifically teach a cylindrical primary filter It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention (or at the time the invention was made; if pre-AIA ) to provide of ZHANG with the cylindrical shape (thereby, in combination within the scope of the primary filter and the rotatable nozzle are concentrically aligned about a center axis) of ZHANG since a cylinder is an elongated circle and a circle is the most efficient two dimensional shape as for providing space and conserving material Claim(s) 6 is/are rejected under 35 U.S.C. 103 as being unpatentable over CN109107291A (herein known as ZHANG) in view of US 20200406182 (herein known as GRIEVE) and US 20070087071 (herein known as DEVOS) With regard to claim 6, ZHANG does not specifically teach a locking mechanism capable of maintaining a fluid connection between the filter housing and the collection container But, DEVOS sufficiently teaches a locking mechanism capable of maintaining a fluid connection between the filter housing and the collection container, especially at para 29; Apparatus claims must be structurally distinguishable from the prior art in terms of structure, not function. The manner of operating an apparatus does not differentiate an apparatus claim from the prior art, if the prior art apparatus teaches all of the structural limitations of the claim (see MPEP § 2114 & § 2173.05(g)) It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention (or at the time the invention was made; if pre-AIA ) to provide ZHANG -GRIEVE with a locking mechanism capable of maintaining a fluid connection between the filter housing and the collection container of DEVOS for the benefit of a secure fit, during use, as determined as needed, with reasonably expected results Allowable Subject Matter Claim(s) 12, 13,14,15,16,17 allowed; and As allowable subject matter has been indicated, applicant's reply must either comply with all formal requirements or specifically traverse each requirement not complied with. See 37 CFR 1.111(b) and MPEP § 707.07(a). Claim(s) 5,9,10,11, 20 objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Prior art discussion: US 12201926 B2 teaches a filter device with a filter housing, see abstract Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ANTHONY R SHUMATE whose telephone number is (571)270-5546. The examiner can normally be reached on M,T,Th,F. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Benjamin Lebron can be reached on (571)272-0475. 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. /ANTHONY SHUMATE/ Primary Examiner, Art Unit 1773
Read full office action

Prosecution Timeline

Mar 14, 2024
Application Filed
Jul 17, 2026
Non-Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12697580
OXYGEN-ENRICHED COMBUSTION FOR NATURAL GAS COMBINED CYCLE OPERATION
3y 0m to grant Granted Aug 04, 2026
Patent 12698699
System and Method of Reducing Emissions and Increasing Swell in an Oil Conditioning Process
2y 8m to grant Granted Aug 04, 2026
Patent 12691415
HOLLOW FIBER MEMBRANE AND METHOD FOR PRODUCING SAME
3y 2m to grant Granted Jul 28, 2026
Patent 12678529
UV Air Purifier With Baffle System
2y 9m to grant Granted Jul 14, 2026
Patent 12629621
ANTIMICROBIAL FILTER MEDIA
4y 0m to grant Granted May 19, 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

1-2
Expected OA Rounds
70%
Grant Probability
84%
With Interview (+14.2%)
2y 10m (~5m remaining)
Median Time to Grant
Low
PTA Risk
Based on 717 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