Prosecution Insights
Last updated: October 02, 2026
Application No. 18/931,594

MASK ASSEMBLY, APPARATUS AND METHOD OF MANUFACTURING DISPLAY APPARATUS

Non-Final OA §102§103
Filed
Oct 30, 2024
Priority
Nov 21, 2023 — RE 10-2023-0162733
Examiner
MILLER, MICHAEL G
Art Unit
1712
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Samsung Display Co., Ltd.
OA Round
1 (Non-Final)
52%
Grant Probability
Moderate
1-2
OA Rounds
2y 0m
Est. Remaining
68%
With Interview

Examiner Intelligence

Grants 52% of resolved cases
52%
Career Allowance Rate
336 granted / 646 resolved
-13.0% vs TC avg
Strong +16% interview lift
Without
With
+15.8%
Interview Lift
resolved cases with interview
Typical timeline
4y 0m
Avg Prosecution
24 currently pending
Career history
667
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
64.3%
+24.3% vs TC avg
§102
14.6%
-25.4% vs TC avg
§112
17.9%
-22.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 646 resolved cases

Office Action

§102 §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 . Election/Restrictions Applicant’s election without traverse of Claims 19-27 in the reply filed on 14 JUL 2026 is acknowledged. Claims 1-18 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 14 JUL 2026. Claim Rejections - 35 USC § 102 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 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 person shall be entitled to a patent unless – (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. Claim(s) 19-21 and 24-16 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Kim ‘603 (US PGPub 2021/0249603). Claim 19 – Kim ‘603 teaches a method of manufacturing a display apparatus (PG 0161), the method comprising: disposing a mask assembly (PG 0162, mask assembly 100) and a substrate (PG 0162, substrate 330) inside a chamber (PG 0162, vacuum chamber 300); and passing, through the mask assembly, a deposition material (PG 0163, deposition material generally) supplied from a deposition source (PG 0162, deposition source 310), and depositing the deposition material on the substrate (PG 0163, “deposited in a pattern shape… through the deposition pattern portions… formed in the split masks”), wherein the mask assembly comprises (Figure 3): a mask frame including an opening area (PG 0083, mask frame; PG 0086, mask openings 132a-d); and a mask sheet which shields at least a portion of the opening area and is disposed on the mask frame (PG 0090-0096, the array of first and second split and gap masks; Figure 3 anticipates at least an array of four split masks and two gap masks with the dots showing contemplation of extending the array, discussed specifically at PG 0079), wherein the mask sheet comprises: a clamping portion fixed to the mask frame (PG 0106, masks may be tensioned by clamping at the ends); a connection stick spaced apart from the clamping portion (PG 0109, first support part 135a); and a plurality of sub-masks arranged between the clamping portion and the connection stick and defining a pattern hole (PG 0090-0096, the array of first and second split and gap masks), and the connection stick is disposed between sub-masks adjacent to each other among the plurality of sub-masks and supports each of the sub-masks (PG 0092, element 135a is disposed between split masks 140 and 160; PG 0096, element 135a is disposed between gap masks 150 and 170), and end portions of the sub-masks disposed on the connection stick are spaced apart from each other (PG 0092 and 0096 as directly above, both paragraphs cite gaps less than the width of part 135a between adjacent ends of paired masks). Claim 20 – Kim ‘603 teaches the method of claim 19, wherein each of the sub-masks disposed on the connection stick is coupled to the connection stick through a plurality of welding points arranged in a row (PG 0109-0110, welding connections to support part 135a). Claim 21 – Kim ‘603 teaches the method of claim 20, wherein the plurality of welding points is disposed in a direction perpendicular to a lengthwise direction of a sub-mask of the plurality of sub-masks (Figures 3 and 9, WE portions perpendicular to long axes of masks). Claim 24 – Kim ‘603 teaches the method of claim 19, wherein the sub-masks are tensioned in a first direction and fixed to the clamping portion and the connection stick (PG 0106). Claim 25 – Kim ‘603 teaches the method of claim 24, wherein the mask sheet is tensioned in a second direction different from the first direction and is fixed to the mask frame (PG 0078) Claim 26 – Kim ‘603 teaches the method of claim 19, wherein a support stick is disposed on the mask frame and crosses the opening area (PG 0085, support part 135b). 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. 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. Claim(s) 22, 23, and 27 is/are rejected under 35 U.S.C. 103 as being unpatentable over Kim ‘603. Claim 22 – Kim ‘603 teaches the method of claim 19, but does not expressly teach or suggest wherein a width of the connection stick is in a range of about 5 millimeters to about 100 millimeters. Selection of a particular dimension suitable to the intended final dimensions of the mask assembly would only involve a mere change of size of the part; said selection commensurate with the claims is held as prima facie obvious in the absence of unexpected results derived from the selection. Claim 23 – Kim ‘603 teaches the method of claim 19, but does not expressly teach or suggest wherein a thickness of the connection stick is at least a thickness of a sub-mask of the plurality of sub-masks and is within a range of 1 millimeter or less. Selection of a particular dimension suitable to the intended final dimensions of the mask assembly would only involve a mere change of size of the part; said selection commensurate with the claims is held as prima facie obvious in the absence of unexpected results derived from the selection Claim 27 – Kim ‘603 teaches the method of claim 26, but does not expressly teach or suggest wherein the support stick defines an opening into which the connection stick is inserted. The disclosed elements 135a and 135b are disclosed as perpendicularly intersecting at PG 0085; selection of any particular method of intersection commensurate with the claim is held as prima facie obvious in the absence of unexpected results derived from the selection; alternatively, choosing to make parts integral or separate is generally held as prima facie obvious. Reference of Record Examiner wishes to make US PGPub 2025/0059638 of record in the instant application. The disclosure and claims thereof share significant overlap with the instant application; it is not being relied upon for rejections at this time. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to MICHAEL G MILLER whose telephone number is (571)270-1861. The examiner can normally be reached M-F 9:00-5:30 EST. 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, Michael Cleveland can be reached at 571-272-1418. 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. /MICHAEL G MILLER/ Primary Examiner, Art Unit 1712
Read full office action

Prosecution Timeline

Oct 30, 2024
Application Filed
Sep 21, 2026
Non-Final Rejection mailed — §102, §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
52%
Grant Probability
68%
With Interview (+15.8%)
4y 0m (~2y 0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 646 resolved cases by this examiner. Grant probability derived from career allowance rate.

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