Prosecution Insights
Last updated: April 19, 2026
Application No. 17/888,573

SERIALIZED BROADCAST COMMAND MESSAGING IN A DISTRIBUTED SYMMETRIC MULTIPROCESSING (SMP) SYSTEM

Non-Final OA §102§103
Filed
Aug 16, 2022
Examiner
YU, HENRY W
Art Unit
2181
Tech Center
2100 — Computer Architecture & Software
Assignee
International Business Machines Corporation
OA Round
1 (Non-Final)
69%
Grant Probability
Favorable
1-2
OA Rounds
3y 2m
To Grant
98%
With Interview

Examiner Intelligence

Grants 69% — above average
69%
Career Allow Rate
383 granted / 556 resolved
+13.9% vs TC avg
Strong +29% interview lift
Without
With
+29.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
30 currently pending
Career history
586
Total Applications
across all art units

Statute-Specific Performance

§101
5.5%
-34.5% vs TC avg
§103
63.5%
+23.5% vs TC avg
§102
16.1%
-23.9% vs TC avg
§112
7.7%
-32.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 556 resolved cases

Office Action

§102 §103
DETAILED ACTION The instant application having Application No. 17/888,573 has a total of 20 claims pending in the application; there are 2 independent claims and 18 dependent claims, all of which are ready for examination by the examiner. 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 . INFORMATION CONCERNING DRAWINGS Drawings The applicant’s drawings submitted are acceptable for examination purposes. INFORMATION CONCERNING THE SPECIFICATION Specification The applicant’s specification submitted is acceptable for examination purposes. REJECTIONS BASED ON PRIOR ART Claim Rejections - 35 USC § 102 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)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claims 1, 9, 11, and 19 are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Avarez, II et al. (Publication Number US 2003/0046356 A1). As per claim 1, Avarez, II et al. discloses “A method of serialized broadcast command messaging in a distributed symmetric multiprocessing (SMP) system (Abstract, lines 1-3), the method comprising: sending a serial broadcast command from a home chip to a plurality of other chips comprising serial primary chip, wherein each chip of the plurality of other chips comprises a broadcast controller mapped to a home chip broadcast controller (multiple master devices such as processors are organized into a set of nodes supported by a node controller, where the node controller receives transactions from a master device and communicates with a master device as another master device or as a slave device; Paragraph 0013).” Avarez, II et al. discloses “assigning, by the serial primary chip, a tag to the serial broadcast command (see the transaction tag; Paragraph 0065).” Avarez, II et al. discloses “sending, from the serial primary chip, to the home chip and a remainder of the plurality of other chips, the tag (Paragraph 0109-0110, 0116-0117; FIG. 11).” Avarez, II et al. discloses “and broadcasting, by the home chip and each chip of the plurality of other chips, the serial broadcast command in an order based on the tag of the serial broadcast command (Paragraph 0109-0110, 0116-0117; FIG. 11).” As per claims 9 and 19, Avarez, II et al. discloses “The method of claim 1 (as disclosed by Avarez, II et al. above), wherein the serial broadcast command is broadcast by the home chip and the plurality of other chips responsive to a respective local tag matching the tag of the serial broadcast command (see the transaction tag; Paragraph 0065).” As per claim 11, Avarez, II et al. discloses “A system for serialized broadcast command messaging in a distributed symmetric multiprocessing (SMP) system (Abstract, lines 1-3), comprising: a home chip (multiple master devices such as processors; Paragraph 0013).” Avarez, II et al. discloses “a plurality of other chips comprising a serial primary chip, wherein each chip of the plurality of other chips comprises a broadcast controller mapped to a home chip broadcast controller (multiple master devices such as processors are organized into a set of nodes supported by a node controller, where the node controller receives transactions from a master device and communicates with a master device as another master device or as a slave device; Paragraph 0013).” Avarez, II et al. discloses “and wherein the system is configured to perform steps comprising: sending a serial broadcast command from the home chip to the plurality of other chips (Paragraph 0109-0110, 0116-0117; FIG. 11).” Avarez, II et al. discloses “assigning, by the serial primary chip, a tag to the serial broadcast command (see the transaction tag; Paragraph 0065).” Avarez, II et al. discloses “sending, from the serial primary chip, to the home chip and a remainder of the plurality of other chips, the tag (Paragraph 0109-0110, 0116-0117; FIG. 11).” Avarez, II et al. discloses “and broadcasting, by the home chip and each chip of the plurality of other chips, the serial broadcast command based on the tag of the serial broadcast command (Paragraph 0109-0110, 0116-0117; FIG. 11).” Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103(a) which forms the basis for all obviousness rejections set forth in this Office action: (a) A patent may not be obtained though the invention is not identically disclosed or described as set forth in section 102 of this title, if the differences between the subject matter sought to be patented and the prior art are such that the subject matter as a whole would have been obvious at the time the invention was made to a person having ordinary skill in the art to which said subject matter pertains. Patentability shall not be negatived by the manner in which the invention was made. Claims 2-10 and 12-20 are rejected under 35 U.S.C. 103(a) as being unpatentable over Avarez, II et al. (Publication Number US 2003/0046356 A1) in view of Kohl et al. (Publication Number US 2020/0264797 A1). As per claims 2 and 12, Avarez, II et al. discloses “The method of claim 1 (as disclosed by Avarez, II et al. above).” However, Avarez, II et al. does not explicitly disclose the use of “drawers” as disclosed in the limitation “wherein the home chip is included in a home drawer and the serial primary chip is included in a serial primary drawer.” Kohl et al. disclose the use of “drawers“ as disclosed in the limitation “wherein the home chip is included in a home drawer and the serial primary chip is included in a serial primary drawer (FIG. 1; Paragraph 0030).” Avarez, II et al. and Kohl et al. are analogous art in that they in the field of processor groupings. Before the effective filing date of the claimed invention it would have been obvious to a person of ordinary skill in the art to combine the elements of Avarez, II et al. and Kohl et al. to enable optimal resource allocation among groupings/partitions without disruption [Paragraph 0003]. As per claims 3 and 13, Avarez, II et al. discloses “The method of claim 2 (as disclosed by Avarez, II et al. and Kohl et al. above), wherein sending the serial broadcast command from the home chip to the plurality of other chips comprises: sending, by the home chip, the serial broadcast command to other chips on the home drawer (while Kohl et al. disclose the drawers [FIG. 1; Paragraph 0030], Avarez, II et al. is directed to the transmission/broadcasting of commands; Paragraph 0109-0110, 0116-0117; FIG. 11).” Avarez, II et al. discloses “and sending, via a bus coupling the home drawer and the serial primary drawer, the serial broadcast command to the serial primary drawer (while Kohl et al. disclose the drawers [FIG. 1; Paragraph 0030], Avarez, II et al. is directed to the transmission/broadcasting of commands particularly with the involvement of node controllers; Paragraph 0109-0110, 0116-0117; FIG. 11).” As per claims 4 and 14, Avarez, II et al. discloses “The method of claim 3 (as disclosed by Avarez, II et al. and Kohl et al. above), wherein sending the serial broadcast command to the serial primary drawer comprises: sending, from a first fork chip in the home drawer to a first branch chip in the serial primary drawer, the serial broadcast command (while Kohl et al. disclose the drawers [FIG. 1; Paragraph 0030], Avarez, II et al. is directed to the transmission/broadcasting of commands particularly with the involvement of node controllers; Paragraph 0109-0110, 0116-0117; FIG. 11).” Avarez, II et al. discloses “and sending, from the first branch chip to a remainder of chips in the serial primary drawer, the serial broadcast command (while Kohl et al. disclose the drawers [FIG. 1; Paragraph 0030], Avarez, II et al. is directed to the transmission/broadcasting of commands particularly with the involvement of node controllers; Paragraph 0109-0110, 0116-0117; FIG. 11).” As per claims 5 and 15, Kohl et al. discloses “The method of claim 4 (as disclosed by Avarez, II et al. and Kohl et al. above), wherein the bus is a first bus of a pair of buses coupling the home drawer to the serial primary drawer (see buses 118 connecting the chips 110, 112, 114, and 116; FIG. 1).” As per claims 6 and 16, Kohl et al. discloses “The method of claim 5 (as disclosed by Avarez, II et al. and Kohl et al. above), wherein the pair of buses further comprises a second bus coupling a second fork chip in the home drawer to a second branch chip in the serial primary drawer (highlighted by the presence of separate drawers (evacuating drawer and destination drawer); FIG. 4-5).” As per claims 7 and 17, Avarez, II et al. discloses “The method of claim 5 (as disclosed by Avarez, II et al. and Kohl et al. above), wherein sending the tag comprises: sending, from the serial primary chip, to one or more chips on the serial primary drawer, the tag (see the transaction tag; Paragraph 0065).” Avarez, II et al. discloses “and sending, from the one or more chips on the serial primary drawer to one or more other drawers, the serial broadcast command and the tag (while Kohl et al. disclose the drawers [FIG. 1; Paragraph 0030], Avarez, II et al. is directed to the transmission/broadcasting of commands particularly with the involvement of node controllers; Paragraph 0109-0110, 0116-0117; FIG. 11).” As per claims 8 and 18, Kohl et al. discloses “The method of claim 7 (as disclosed by Avarez, II et al. and Kohl et al. above), wherein each of the one or more chips of the serial primary drawer is coupled to a corresponding drawer of the one or more other drawers (chip 110 is connected to chip 112, chip 112 to chips 110 and 114, and chip 114 to chips 112 and 116; FIG. 1).” As per claims 10 and 20, Avarez, II et al. discloses “The method of claim 9 (as disclosed by Avarez, II et al. above).” However, Avarez, II et al. does not disclose “wherein the serial broadcast command is broadcast via an on-chip ring.” Kohl et al. discloses “wherein the serial broadcast command is broadcast via an on-chip ring (connection from drawer 102 to 108 which loops back to drawer 102; FIG. 1).” Avarez, II et al. and Kohl et al. are analogous art in that they in the field of processor groupings. Before the effective filing date of the claimed invention it would have been obvious to a person of ordinary skill in the art to combine the elements of Avarez, II et al. and Kohl et al. to enable optimal resource allocation among groupings/partitions without disruption [Paragraph 0003]. ACKNOWLEDGEMENT OF REFERENCES CITED BY APPLICANT As required by M.P.E.P. 609(c), the applicant's submission of the Information Disclosure Statement dated August 16, 2022, is acknowledged by the examiner and the cited references have been considered in the examination of the claims now pending. As required by M.P.E.P 609 C(2), a copy of the PTOL-1449 initialed and dated by the examiner is attached to the instant office action. RELEVENT ART CITED BY THE EXAMINER The following prior art made of record and relied upon is citied to establish the level of skill in the applicant’s art and those arts considered reasonably pertinent to applicant’s disclosure. See MPEP 707.05(c). The following references teach command broadcasting. U.S. PATENT NUMBERS:2011/0320665 A1 – [Abstract; Paragraphs 0018-0020] CLOSING COMMENTS Conclusion The examiner requests, in response to this Office action, support be shown for language added to any original claims on amendment and any new claims. That is, indicate support for newly added claim language by specifically pointing to page(s) and line no(s) in the specification and/or drawing figure(s). This will assist the examiner in prosecuting the application. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Henry Yu whose telephone number is (571)272-9779. The examiner can normally be reached Monday - Friday. 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, IDRISS ALROBAYE can be reached at (571) 270-1023. 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. /H.W.Y/Examiner, Art Unit 2181 September 29, 2025 /IDRISS N ALROBAYE/Supervisory Patent Examiner, Art Unit 2181
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Prosecution Timeline

Aug 16, 2022
Application Filed
Oct 06, 2023
Response after Non-Final Action
Sep 29, 2025
Non-Final Rejection — §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
69%
Grant Probability
98%
With Interview (+29.2%)
3y 2m
Median Time to Grant
Low
PTA Risk
Based on 556 resolved cases by this examiner. Grant probability derived from career allow rate.

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