Prosecution Insights
Last updated: April 19, 2026
Application No. 18/242,156

HINGE AND FOLDABLE DISPLAY DEVICE

Final Rejection §103§112
Filed
Sep 05, 2023
Examiner
MORGAN, EMILY M
Art Unit
3677
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
OA Round
2 (Final)
35%
Grant Probability
At Risk
3-4
OA Rounds
3y 1m
To Grant
69%
With Interview

Examiner Intelligence

Grants only 35% of cases
35%
Career Allow Rate
354 granted / 999 resolved
-16.6% vs TC avg
Strong +34% interview lift
Without
With
+33.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
55 currently pending
Career history
1054
Total Applications
across all art units

Statute-Specific Performance

§103
43.4%
+3.4% vs TC avg
§102
18.8%
-21.2% vs TC avg
§112
33.7%
-6.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 999 resolved cases

Office Action

§103 §112
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 . Response to Arguments Applicant's arguments filed 1/23/2026 have been fully considered. Applicant’s statement that the subject matter included into claim 1 is shown in figures 6 and 7. Applicant elected species 2 (four shafts with friction plates in figures 1, 3, 12-14) on 5/14/2025 without traverse. Examiner notes that figure 6 seems to be generic to species 1 and 2 (applicant elected species 2) and figure 7 seems to be generic to all three species. Applicant’s arguments 1/23/2026 are persuasive to examiner to consider claims 1, 2, 16-20 presented on 1/23/2026. Amendments to the drawings, specification, and claims, made on 9/8/2025 were not entered, and are not considered to be entered. Drawing amendment of 1/23/2026 only adds labels to existing parts in figure 12, and serve to increase clarity. Drawing amendments of 1/23/2026 are entered. Regarding 112a rejection of claims 17-18, applicant does not remove the unsupported locations of the friction plates. 112a rejection of claims 17-18 are maintained. Applicant does not support or indicate drawings that show all three locations of the friction plates. The location of friction plates in figures 1 and 12 are identical, figures 1 and 12, which are only between two adjacent flip parts. The friction plates 401 do not interact with the supporting base 100 at all. Similarly, applicant does not resolve the 112b rejection of the same issue. Regarding the prior art Kim and Hsu, applicant’s arguments are presented on 9/8/2025 remarks, pages marked 10-13. Applicant’s arguments with respect to claim(s) 1-2, 16-20 have been considered but are moot because the new ground of rejection does not rely on the prior rejection of record for any teaching or matter specifically challenged in the argument. Drawings The drawings were received on 9/8/2025. These drawings are not entered. The drawings were received on 1/23/2026. These drawings are entered. The drawings of 1/23/2026 are objected to because: Figures 2, 6, and 11, applicant shows two drawings per figure, which need to be annotated by figures a and b, please see MPEP 608.02v. “groove c1” is not shown. If applicant intends pin 202 is within slot C2, this is not indicated in figure 2 in the upper or lower figure. It seems as if the “fourth connecting portion” is shown in figure 12, but is not labeled. The friction plates 401 are shown in only one position, only in figure 12, and none of the locations claimed in claim 17 are that which is shown in figure 12. Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. The figure or figure number of an amended drawing should not be labeled as “amended.” If a drawing figure is to be canceled, the appropriate figure must be removed from the replacement sheet, and where necessary, the remaining figures must be renumbered and appropriate changes made to the brief description of the several views of the drawings for consistency. Additional replacement sheets may be necessary to show the renumbering of the remaining figures. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claims 17-18 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. Regarding claim 17, applicant claims the friction plate(s) are located “between first rotating member and the supporting base”, “between the rotating assembly and the supporting base”, or “between two adjacent flip parts”. Examiner notes that the location of friction plates 401 are shown ONLY in the position of figure 12, which is not between any of the flip parts or any portion of the flip parts. The friction plates 401 are shown only exterior of the supporting base 10 and mounted on transmission shafts. Applicant does not show or have support for the friction plates in any other location than that shown in figure 12. The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 17-18 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Regarding claim 17, applicant claims the friction plate(s) are located “between first rotating member and the supporting base”, “between the rotating assembly and the supporting base”, or “between two adjacent flip parts”. Examiner notes that the location of friction plates 401 are shown ONLY in the position of figure 12, which is not between any of the flip parts or any portion of the flip parts. The friction plates 401 are shown only exterior of the supporting base 10 and mounted on transmission shafts. Examiner assumes that applicant’s friction plates are claimed to be exterior of the base body, as disclosed. Dependent claims inherit the same issues from parent claims and do not resolve any indefinite issues. 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. Claim(s) 1-2, 16-18, 20 is/are rejected under 35 U.S.C. 103 as being unpatentable over 11408214 Hsu, in view of 2021/0355988 Cheng. PNG media_image1.png 715 587 media_image1.png Greyscale Regarding claim 1, Hsu discloses a hinge, comprising: a supporting base (base body 10) extending in a first direction (along axis c in figure 2); and at least two flip parts 2 (detailed in figure 5, annotated below), each flip part 2 being rotatably connected to the supporting base 10 (flat or as in figure 8), wherein the at least two flip parts 2 are configured to be distributed on two opposite sides of the supporting base in a second direction in case that the hinge is in an unfolded state (flat as shown in figure 1), and the second direction intersects with the first direction (directions are perpendicular), wherein each of the at least two flip parts 2 comprises a first rotating member 21, and a first connecting portion 213 connected to a first end of the first rotating member 21; and the supporting base 10 has a first arc-shaped sliding groove 12, and a part of the first connecting portion 213 is located in the first arc-shaped sliding groove 12 (as shown in figure PNG media_image2.png 530 713 media_image2.png Greyscale 8); each of the at least two flip parts 2 further comprises a rotating assembly 22 (both parts 22, detailed in figure 5), a first end of the rotating assembly 22 is rotatably connected to the supporting base (using curved section 221), and a second end of the rotating assembly 22 is slidably connected to a second end of the first rotating member 21 (using sliding groove 212b, figure 5), the first end of the rotating assembly (both parts 22) has a second rotating member 221 (on opposite side of rotating member 21); the supporting base 10 further comprises a sliding portion 13 (figure 4), and the second rotating member 221 (on opposite side of rotating member 21) is rotatably connected to the sliding portion 13 (figures 9 and 10). The sliding portion 13 on the base 10 of Hsu is a groove; the second rotating member 221 is a protrusion that goes within the groove/sliding portion 13 in figures 9 and 10 in Hsu. Applicant claims the use of two parts on the second rotating member that forms a groove, while the sliding portion on the body is a protrusion, and that these two parts engage each other. Hsu discloses the reverse. Cheng discloses a similar electronics hinge having a flexible screen 30 over the hinge (figure 2), the hinge including a rotating assembly 2571 with a first connecting portion 255 and a second connecting portion 2552 creating a groove in the rotating assembly 2571 (figure 5) and the supporting base 251 having an arc shaped protrusion 2518 that is within the groove of the rotating assembly 2571. It would have been obvious to one of ordinary skill in the art before the effective filing date to place the protrusion of the arc shaped protrusion in an arch shaped groove as taught by Hsu, on the support base instead of the rotating member, as taught by similar hinges such as Cheng. Examiner contends It would have been obvious to one having ordinary skill in the art at the time of the invention was made to place the arc shaped protrusion on the supporting base of Hsu and have the arc shaped groove on the rotating member, since it has been held that a mere reversal of the essential working parts of a device involves only routine skill in the art. See MPEP 2144.04 (VI) (a). Examiner contends that these are known equivalents and are used for the same purpose within the ordinary skill in the art. See MPEP 2144 (I): “rationale to modify or combine the prior art does not have to be expressly stated in the prior art…it may be reasoned from knowledge generally available to one of ordinary skill in the art”. Examiner which part has the arc shaped protrusion and which part has the arc shaped groove does not affect the form, function, or use, of the hinge of Hsu, since Hsu requires the arc shaped protrusion and groove in the identical location between identical parts as claimed. This modification is similar to reversing which side of a shirt has buttons, and which side of the shirt has holes. Regarding claim 20, Hsu as modified discloses the hinge of claim 1 used in a foldable display device (Figure 1) comprising a flexible display panel S, at least two housings (figure 1) and a hinge, wherein the at least two housings are connected to each other through the hinge, the flexible display panel is arranged on and covers the at least two housings. Regarding claim 2, Hsu as modified discloses the hinge of claim 1, wherein the supporting base 10 further comprises a first hollowed-out groove (between extensions 1 in figure 2), and the first arc-shaped sliding groove 12 is in communication with the first hollowed-out groove (as shown in figure 2); and wherein the first end (with first connecting portion 213 is) of the first rotating member 21 is located in the first hollowed-out groove (as shown in figure 2), and is rotatably connected to the supporting base 10 through the first connecting portion 213 (as shown in figure 8). Regarding claim 16, Hsu discloses the hinge of claim 1, wherein the flip part 2 (detailed in figure 5) further comprises another connecting portion 321 connected to the second end of the first rotating member 21 (using slots 223), and an axial direction of the another connecting portion 321 is parallel to the first direction (parallel to axis C); and the second end of the rotating assembly 22 has a sliding groove 223, and an end of the another connecting portion 321 facing away from the first rotating member 21 is located in the sliding groove 223 and slidably connected to the rotating assembly 22. Regarding claim 17, please see 112a, 112b rejections above. Hsu as modified discloses the hinge of claim 3, further comprising a torsion part (detailed in figures 11 and 12) connected to the flip part 2 (by fourth connection portion 321), the torsion part comprising one or more friction plates 35; wherein the one or more friction plates are arranged side by side in the first direction (as shown in figures 11-12) exterior of the base body, as disclosed by applicant’s figure 12. Regarding claim 18, Hsu discloses the hinge of claim 17, wherein the torsion part (figures 11-12) further comprises a transmission shaft 31 connected to the flip part 2 (by way of arm 32 and fourth connecting portion 321), and the one or more friction plates 35 are fitted over the transmission shaft 31 in the first direction. Claim(s) 19 is/are rejected under 35 U.S.C. 103 as being unpatentable over Hsu in view of Chen as applied to claim 1 above, and further in view of 2023/0217615 Kim. Regarding claim 19, Hsu as modified discloses the hinge of claim 1, wherein the supporting base comprises a base body, but does not include a protective shell. Kim discloses a similar hinge with folding parts for a device having a foldable flexible screen, having a base body and a protective shell, as described in claim 19 above. It would have been obvious to one of ordinary skill in the art before the effective filing date to add a protective shell like that of Kim to the known hinge of Hsu for “an external cover” [0080] of the similar hinge Hsu. Doing so provides an extra layer of protection of the known devices, or for an aesthetic change, from the existing hinge of Hsu without changing the folding mechanism of Hsu, in a known manner, taught by Kim. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). 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 EMILY M MORGAN whose telephone number is (303)297-4260. The examiner can normally be reached Mon-Thurs 8-5 MST. 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, Jason San can be reached at (571)272-6531. 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. /EMILY M MORGAN/Primary Examiner, Art Unit 3677
Read full office action

Prosecution Timeline

Sep 05, 2023
Application Filed
Jun 05, 2025
Non-Final Rejection — §103, §112
Sep 08, 2025
Response after Non-Final Action
Sep 08, 2025
Response Filed
Jan 23, 2026
Response Filed
Feb 18, 2026
Final Rejection — §103, §112 (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

3-4
Expected OA Rounds
35%
Grant Probability
69%
With Interview (+33.5%)
3y 1m
Median Time to Grant
Moderate
PTA Risk
Based on 999 resolved cases by this examiner. Grant probability derived from career allow rate.

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