Prosecution Insights
Last updated: July 17, 2026
Application No. 18/851,003

SCREEN MIRRORING METHOD AND SYSTEM, AND DEVICE AND STORAGE MEDIUM

Final Rejection §103
Filed
Sep 25, 2024
Priority
Apr 08, 2022 — CN 202210367043.8 +1 more
Examiner
ALATA, YASSIN
Art Unit
2426
Tech Center
2400 — Computer Networks
Assignee
Beijing Bytedance Network Technology Co., Ltd.
OA Round
2 (Final)
67%
Grant Probability
Favorable
3-4
OA Rounds
1y 1m
Est. Remaining
81%
With Interview

Examiner Intelligence

Grants 67% — above average
67%
Career Allowance Rate
557 granted / 835 resolved
+8.7% vs TC avg
Moderate +14% lift
Without
With
+14.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
33 currently pending
Career history
879
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
79.5%
+39.5% vs TC avg
§102
10.6%
-29.4% vs TC avg
§112
1.1%
-38.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 835 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 . Response to Arguments Applicant's arguments filed 04/02/2026 have been fully considered but they are not persuasive. The Applicant argues that GUO does not disclose 1) “sending an audio and video stream to a target receiving terminal based on the push streaming address, such that the target receiving terminal plays the audio and video stream, wherein the target receiving terminal is a terminal that logs into the screen projection server with the set account, and 2) wherein the sending terminal information comprises local area network address information, sending terminal port information, and audio and video path information”. The Examiner respectfully disagrees. Regarding the first issue, claim 1 recites “such that the target receiving terminal plays the audio and video stream”. It does not require that displaying of the audio and video stream. In other words, GUO’s device A or B are interpreted to be a target receiving terminal that control the playing on the terminals 1 and 2; as in Fig. 3. The claim does not require that the displaying is done by the target receiving terminal. It recites “such that the target receiving terminal plays the audio and video stream”. In GUO, terminals A or B can play, i.e. project, content on terminals 1 and 2. Regarding the second issue, GUO is cited to disclose “wherein the sending terminal information comprises network information and audio and video path information and LI is cited to disclose the local area network address information and sending terminal port information. For at least the above reasons, the present claimed invention is not patentable over the cited reference(s). Accordingly, future amendments to the claims might overcome the cited reference(s). Claims 3, 11-15 and 18-20 have been amended. The amendments overcome the 112 rejection. 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. Claims 1, 4, 7-11 and 16-20 are rejected under 35 U.S.C. 103 as being unpatentable over GUO (CN-108989879) in view of LI (CN-113055976), both documents are translated and provided for the Applicant’s convenience. Regarding claim 1, GUO discloses a screen projection method, performed by a sending terminal, comprising: logging in to a screen projection server based on a set account (a first and a second terminal use the same account login server; see at least page 6, last paragraph- page 7, first paragraph); generating a push streaming address of at least one protocol type based on sending terminal information, and sending the push streaming address to the screen projection server, wherein the sending terminal information comprises network information, and audio and video path information (the first terminal sends screen control instruction to the server, wherein the sending comprising: the first terminal generates screen casting control instructions according to selection instruction, wherein the screen projection control instruction comprises identification information of the second terminal; see at least page 8, last paragraph. The second terminal identification information is a UUID; see at least page 8, second paragraph); and sending an audio and video stream to a target receiving terminal based on the push streaming address, such that the target receiving terminal plays the audio and video stream (after link is established between the two terminals and the screen control instruction is sent to the server, content is sent to the second terminal for display/decoding; see at least page 3, third paragraph and page 11, fourth paragraph-fifth paragraph and page 9, third paragraph-fourth paragraph), wherein the target receiving terminal is a terminal that logs in to the screen projection server with the set account (the second terminal is using the same account login server with the first terminal; see at least page 2, seventh paragraph, page 3, fifth paragraph and page 9, fifth paragraph). GUO is not clear about wherein the sending terminal information comprises local area network address information and sending terminal port information. LI discloses the above missing limitations; sending a connection establishing request by an end device comprising connection information of the sending end device, i.e. device, name, IP address and port number information; see at least page 5, tenth paragraph-page 6, sixth paragraph. Therefore, it would have been obvious to one of ordinary skill in the art before the effective filling date of the claimed invention to modify GUO by the teachings of LI by having the above limitations so to be able to solve the technical problem of low network efficiency of wireless projection screen method of the existing technology; see at least page 2, fourth paragraph. Regarding claim 4, GUO discloses a screen projection method, performed by a receiving terminal, comprising: logging in to a screen projection server based on a set account (a first and a second terminal use the same account login server; see at least page 6, last paragraph- page 7, first paragraph); wherein a push streaming address is generated by a sending terminal that logs in to the screen projection server with the set account (the first terminal sends screen control instruction to the server, wherein the sending comprising: the first terminal generates screen casting control instructions according to selection instruction, wherein the screen projection control instruction comprises identification information of the second terminal; see at least page 8, last paragraph. The second terminal identification information is a UUID; see at least page 8, second paragraph); and obtaining an audio and video stream based on a push streaming address and playing the audio and video stream (after link is established between the two terminals and the screen control instruction is sent to the server, content is sent to the second terminal for display/decoding; see at least page 3, third paragraph and page 11, fourth paragraph-fifth paragraph and page 9, third paragraph-fourth paragraph). GUO discloses the push streaming address and the screen projection server, but is not clear about an address list and a user selecting an address. LI discloses the above missing limitations; obtaining and generating a list of all devices in a discovery process and allowing the user to select a device; see at least page 5, fourth paragraph-seven paragraph. Therefore, it would have been obvious to one of ordinary skill in the art before the effective filling date of the claimed invention to modify GUO by the teachings of LI by having the above limitations so to be able to solve the technical problem of low network efficiency of wireless projection screen method of the existing technology; see at least page 2, fourth paragraph. Regarding claim 7, GUO discloses screen projection method, performed by a screen projection server, comprising: receiving a push streaming address sent by a sending terminal and a screen projection request sent by at least one receiving terminal when it is detected that the sending terminal and the at least one receiving terminal log in to the screen projection server based on a same set account (a first terminal sends screen control instruction to the server, wherein the sending comprising: the first terminal generates screen casting control instructions according to selection instruction, wherein the screen projection control instruction comprises identification information of the second terminal; see at least page 8, last paragraph. The second terminal identification information is a UUID; see at least page 8, second paragraph, wherein the first and the second terminal use the same account login server; see at least page 6, last paragraph- page 7, first paragraph); and sending audio and video stream, such that the sending terminal projects an audio and video stream played to the at least one receiving terminal for playing (after link is established between the two terminals and the screen control instruction is sent to the server, content is sent to the second terminal for display/decoding; see at least page 3, third paragraph and page 11, fourth paragraph-fifth paragraph and page 9, third paragraph-fourth paragraph). GUO discloses the push streaming address and the screen projection server, but is not clear about sending an address to the at least one receiving terminal based on a screen projection request. LI discloses the above missing limitations; obtaining and generating a list of all devices in a discovery process and allowing the user to select a device; see at least page 5, fourth paragraph-seven paragraph. Therefore, it would have been obvious to one of ordinary skill in the art before the effective filling date of the claimed invention to modify GUO by the teachings of LI by having the above limitations so to be able to solve the technical problem of low network efficiency of wireless projection screen method of the existing technology; see at least page 2, fourth paragraph. Regarding claim 8, GUO in view of LI disclose the method according to claim 7, after receiving the push streaming address sent by the sending terminal and the screen projection request sent by the at least one receiving terminal, further comprising: forwarding the audio and video stream to the at least one receiving terminal for playing in response to receiving the audio and video stream sent by the sending terminal (after link is established between the two terminals and the screen control instruction is sent to the server, content is sent to the second terminal for display/decoding; see at least page 3, third paragraph and page 11, fourth paragraph-fifth paragraph and page 9, third paragraph-fourth paragraph). Claim 9 is rejected on the same grounds as claims 1 and 7. Claim 10 is rejected on the same grounds as claim 1. Claim 11 is rejected on the same grounds as claim 1. Claim 16 is rejected on the same grounds as claim 4. Claim 17 is rejected on the same grounds as claim 7. Claim 18 is rejected on the same grounds as claim 8. Claim 19 is rejected on the same grounds as claim 4. Claim 20 is rejected on the same grounds as claim 7. Claims 2-3, 6 and 12-15 are rejected under 35 U.S.C. 103 as being unpatentable over GUO in view of LI and further in view of Feldman (US 2017/0374114). Regarding claim 2, GUO in view of LI disclose the method according to claim 1, and disclose sending the audio and video stream to the target receiving terminal based on the push streaming address and the server forwards the stream to the target receiving terminal, but are not clear about performing a screen recording operation on a sending terminal to obtain a stream, determining whether the sending terminal and a target receiving terminal are in a same local area network, establishing a data channel with the target receiving terminal based on a determination result that the sending terminal and the target receiving terminal are in the same local area network, and sending the stream to the target receiving terminal through the data channel and sending the stream to a server based on a determination result that the sending terminal and the target receiving terminal are not in the same local area network. Feldman discloses the above missing limitation; a user of a mobile device can share content on a display device by screen mirroring and there are two modes or operation for establishing the connection, a first mode (direct) if the mobile device and the display are on a same network and a second mode (through a relay server) if the mobile device and the display are connected to a different network; see at least the Abstract and paragraphs 0034, 0039-0041 and 0044-0046. Therefore, it would have been obvious to one of ordinary skill in the art before the effective filling date of the claimed invention to modify GUO in view of LI by the teachings of Feldman by having the above limitations so to be provide a cross-network sharing system; see at least the Abstract. Regarding claim 3, GUO in view of LI disclose the method according to claim 2, wherein determining whether the sending terminal and the target receiving terminal are in the same local area network comprises: sending network exploration information to the target receiving terminal; and determining that the sending terminal and the target receiving terminal are in the same local area network in response to receiving feedback information from the target receiving terminal (inherently from the connection protocols in Li; see at least paragraphs 0030-0033, 0039). Regarding claim 6, GUO in view of LI disclose the method according to claim 4, and disclose most of claim, but are not clear about receiving a stream sent by a target sending terminal in response to determining that a receiving terminal and the target sending terminal are in a same local area network; and receiving the stream sent by a server in response to determining that the receiving terminal and the target sending terminal are in different local area networks. Feldman discloses the above missing limitation; a user of a mobile device can share content on a display device by screen mirroring and there are two modes or operation for establishing the connection, a first mode (direct) if the mobile device and the display are on a same network and a second mode (through a relay server) if the mobile device and the display are connected to a different network; see at least the Abstract and paragraphs 0034, 0039-0041 and 0044-0046. Therefore, it would have been obvious to one of ordinary skill in the art before the effective filling date of the claimed invention to modify GUO in view of LI by the teachings of Feldman by having the above limitations so to be provide a cross-network sharing system; see at least the Abstract. Claim 12 is rejected on the same grounds as claim 2. Claim 13 is rejected on the same grounds as claim 3. Claim 14 is rejected on the same grounds as claim 2. Claim 15 is rejected on the same grounds as claim 3. Claim 5 is rejected under 35 U.S.C. 103 as being unpatentable over GUO in view of LI and further in view of Khan (US 2017/0230368). Regarding claim 5, GUO in view of LI disclose the method according to claim 4, and disclose most of the claim, but are not clear about sending a request to server through a website address and a terminal logs in to the server through a web page. Khan discloses the above missing limitations; a user logs into a web server using a website; see at least paragraphs 0014, 0016 and 0021-0024. Therefore, it would have been obvious to one of ordinary skill in the art before the effective filling date of the claimed invention to modify GUO in view of LI by the teachings of Khan by having the above limitations so to be able to log into a web server see at least the Abstract. 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 YASSIN ALATA whose telephone number is (571)270-5683. The examiner can normally be reached Mon-Fri 7-4 ET. 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, Nasser Goodarzi can be reached at 571-272-4195. 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. /YASSIN ALATA/Primary Examiner, Art Unit 2426
Read full office action

Prosecution Timeline

Sep 25, 2024
Application Filed
Jan 14, 2026
Non-Final Rejection mailed — §103
Apr 02, 2026
Response Filed
Jun 09, 2026
Final Rejection mailed — §103 (current)

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Prosecution Projections

3-4
Expected OA Rounds
67%
Grant Probability
81%
With Interview (+14.2%)
2y 11m (~1y 1m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 835 resolved cases by this examiner. Grant probability derived from career allowance rate.

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