Prosecution Insights
Last updated: April 19, 2026
Application No. 18/776,559

RETICLE ENCLOSURE FOR LITHOGRAPHY SYSTEMS

Non-Final OA §103
Filed
Jul 18, 2024
Examiner
ASFAW, MESFIN T
Art Unit
2882
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Taiwan Semiconductor Manufacturing Company Ltd.
OA Round
1 (Non-Final)
83%
Grant Probability
Favorable
1-2
OA Rounds
2y 9m
To Grant
97%
With Interview

Examiner Intelligence

Grants 83% — above average
83%
Career Allow Rate
794 granted / 961 resolved
+14.6% vs TC avg
Moderate +14% lift
Without
With
+14.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
33 currently pending
Career history
994
Total Applications
across all art units

Statute-Specific Performance

§101
1.1%
-38.9% vs TC avg
§103
53.6%
+13.6% vs TC avg
§102
38.4%
-1.6% vs TC avg
§112
3.2%
-36.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 961 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. Claim(s) 1-20 is/are rejected under 35 U.S.C. 103 as being unpatentable over Chilese et al. [US 20130255407 A1, hereafter Chilese] in view of Lee et al. [US 20140116920 A1, hereafter Lee]. As per Claims 1, 11 and 16, Chilese teaches a reticle enclosure 10 (See fig. 2), comprising: an outer pod (Reticle SMIF Pod (RSP) 11 ) enclosing an inner pod (EUV Inner Pod (EIP)), wherein each of the outer pod and inner pod comprises: a base including a first surface (EIP base 16 and RSP base 13); a cover including a second surface and disposed on the base (EIP cover 15 and RSP cover 12), wherein the base and the cover of the inner pod form an internal space therebetween to include a reticle (Para 32, wherein a reticle 150 is stored in an EUV Inner Pod (EIP) 14), Chilese do not explicitly teach a first L-shaped layer of elastomer or gelatinous material disposed only on a portion of a peripheral region of the first surface of the inner pod and a second L-shaped layer of elastomer or gelatinous material disposed only on a portion of a peripheral region of the second surface of the inner pod, such that the first and second L-shaped layers complement each other; and a third layer of elastomer or gelatinous material disposed on the first surface and the second surface of the outer pod. Lee teaches a seal ring 112a is disposed between the outer pod shell 108 and the outer pod door 110. The seal ring 112a seals the gap between the outer pod shell 108 and the outer pod door 110. The seal ring 112a has a circular cross section shape in FIG. 1, but may have any other shapes in other embodiments. The seal ring 112a comprises fluorocarbon such as commercially available Viton, nitrile butadiene rubber (NBR), or any other suitable material (Para 16, wherein the materials specified are elastomer materials). Therefore, it would have been obvious to one of ordinary skill in the art at time the invention was made to incorporate the seal ring as claimed in order to avoid particle contamination of the reticle inside the storage pod. As per Claim 2, Chilese in view of Lee teaches the reticle enclosure of claim 1, wherein the first L-shaped layer of elastomer or gelatinous material includes an elastomer (Lee Para 16, wherein the materials specified are elastomer materials). Therefore, it would have been obvious to one of ordinary skill in the art at time the invention was made to incorporate the seal ring as claimed in order to avoid particle contamination of the reticle inside the storage pod. As per Claims 3-5 and 19, Chilese in view of Lee teaches the reticle enclosure of claim 2, wherein the elastomer includes one or more selected from the group consisting of natural rubbers, styrene-butadiene block copolymers, polyisoprene, polybutadiene, ethylene propylene rubber, ethylene propylene diene rubber, silicone elastomers, fluoroelastomers, polyurethane elastomers, and nitrile rubbers (Lee Para 16, wherein the materials specified are elastomer materials). Therefore, it would have been obvious to one of ordinary skill in the art at time the invention was made to incorporate the seal ring as claimed in order to avoid particle contamination of the reticle inside the storage pod. As per Claims 6, and 7, Chilese in view of Lee teaches the reticle enclosure of claim 1. Chilese in view of Lee do not explicitly teach wherein the third layer of elastomer or gelatinous material on the first surface and the second surface of the outer pod includes different elastomer or gelatinous materials. However Lee further disclosed that the seal ring 112a comprises fluorocarbon such as commercially available Viton, nitrile butadiene rubber (NBR), or any other suitable material (Para 16 and 25, wherein the seal ring is formed with a variety of different materials and shape). Therefore, it would have been obvious to one of ordinary skill in the art at time the invention was made to incorporate the seal ring as claimed in order to avoid particle contamination of the reticle inside the storage pod. As per Claims 8-10 and 15, Chilese in view of Lee teaches the reticle enclosure of claim 1. Chilese further disclosed wherein each cover includes a top portion and a side portion extending vertically from the top portion (See fig. 2). As per Claims 12 and 18, Chilese in view of Lee teaches the method of claim 11, wherein the first, second, third, and fourth layers each include the same elastomer or gelatinous material (Lee Para 16, wherein the materials specified are elastomer materials). Therefore, it would have been obvious to one of ordinary skill in the art at time the invention was made to incorporate the seal ring as claimed in order to avoid particle contamination of the reticle inside the storage pod. As per Claim 13, Chilese in view of Lee teaches the method of claim 11. Chilese in view of Lee do not explicitly teach wherein at least one of the first, second, third, and fourth layers include a different elastomer or gelatinous material than remaining layers. However Lee further disclosed that the seal ring 112a comprises fluorocarbon such as commercially available Viton, nitrile butadiene rubber (NBR), or any other suitable material (Para 16 and 25, wherein the seal ring is formed with a variety of different materials and shape). Therefore, it would have been obvious to one of ordinary skill in the art at time the invention was made to incorporate the seal ring as claimed in order to avoid particle contamination of the reticle inside the storage pod. As per Claims 14 and 17, Chilese in view of Lee teaches the method of claim 11. Lee further disclosed wherein at least one of the first, second, third, or fourth layers includes an elastomer including one or more selected from the group consisting of natural rubbers, styrene-butadiene block copolymers, polyisoprene, polybutadiene, ethylene propylene rubber, ethylene propylene diene rubber, silicone elastomers, fluoroelastomers, polyurethane elastomers, and nitrile rubbers (Lee Para 16, wherein the materials specified are elastomer materials). Therefore, it would have been obvious to one of ordinary skill in the art at time the invention was made to incorporate the seal ring as claimed in order to avoid particle contamination of the reticle inside the storage pod. As per Claim 20, Chilese in view of Lee teaches the method of claim 16. Chilese further disclosed wherein placing the reticle on the first base includes placing the reticle on one or more restraining mechanisms on the first base (Para 49, reticle clamping elements 155). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to MESFIN ASFAW whose telephone number is (571)270-5247. The examiner can normally be reached Monday - Friday 8 am - 4 pm. 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, Toan Ton can be reached at 571-272-2303. 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. /MESFIN T ASFAW/ Primary Examiner, Art Unit 2882
Read full office action

Prosecution Timeline

Jul 18, 2024
Application Filed
Feb 17, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12601981
RETICLE STORAGE POD AND METHOD FOR SECURING RETICLE
2y 5m to grant Granted Apr 14, 2026
Patent 12596308
MODULAR WAFER TABLE AND METHODS OF MANUFACTURING THEREOF
2y 5m to grant Granted Apr 07, 2026
Patent 12585194
METHOD AND SWAPPING TOOL
2y 5m to grant Granted Mar 24, 2026
Patent 12578656
EUV LIGHT GENERATION APPARATUS AND ELECTRONIC DEVICE MANUFACTURING METHOD
2y 5m to grant Granted Mar 17, 2026
Patent 12578658
SYSTEMS, METHODS, AND DEVICES FOR THERMAL CONDITIONING OF RETICLES IN LITHOGRAPHIC APPARATUSES
2y 5m to grant Granted Mar 17, 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
83%
Grant Probability
97%
With Interview (+14.2%)
2y 9m
Median Time to Grant
Low
PTA Risk
Based on 961 resolved cases by this examiner. Grant probability derived from career allow rate.

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