US 8747097

I'll verify the patent details and check for the litigation/docket activity mentioned in the record. Let me run targeted searches.

Let me verify the full claim set and check the 2026 litigation/appellate activity.

Let me pin down the PTAB outcome and any 2026 Federal Circuit activity.

US Patent 8,747,097 B2 — Analyst Summary

Bibliographic data

One small discrepancy to flag: public databases differ by roughly one day on the priority, filing, grant, and expiration dates (likely time-zone/rounding artifacts in the source records). The authoritative face of the patent controls.

Abstract (verbatim)

"Three-dimensional fabrication resources are improved by adding networking capabilities to three-dimensional printers and providing a variety of tools for networked use of three-dimensional printers. Web-based servers or the like can provide a single point of access for remote users to manage access to distributed content on one hand, and to manage use of distributed fabrication resources on the other."

Plain-language overview of the independent claim

Committing this reads as a single independent claim — claim 1 — with claims 2–20 depending from it. (See uncertainty note at the end.)

Claim 1 is directed to a 3D printer that has a build volume and comprises four cooperating elements:

1. A three-dimensional scanner that captures 3D information from (i.e., of the contents of) the printer's build volume — in plain terms, the machine can "look at" what is physically being built.
2. A machine vision system that takes the image/scan content from that 3D scanner and analyzes it, so that the printer derives a status of a print job currently executing — i.e., the printer assesses its own build progress/condition from what it sees, rather than only from its own commanded tool paths.
3. A network interface connecting the printer to a data network.
4. A web server that transmits that machine-vision-derived print-job status for display at a remote client over the network interface.

Conceptually, the claim ties three ideas together: on-board 3D scanning of the build volume, automated vision-based interpretation of that scan to determine print status, and web-served remote presentation of that status. This is essentially the "networked 3D printer" family applied to a printer that senses its own work.

Dependent claims (2–20) in brief

• Type of printer: fused deposition modeling (2); stereolithography (3).
• Web server functions: hosting a remote user over the network (4); displaying sensor status information (5).
• Scanner modality: stereoscopic imaging (6); shape-from-motion (7); structured light (8).
• Machine-vision functions: automatic inspection of an object in the build volume (9); robotic guidance (10); pass/fail evaluation of a fabricated object (11); error detection (12), with audible alert (13), or visual alert (14); tracking actual vs. predicted print progress (15); comparing the actual 3D result in the build volume to the expected 3D result from the source model (16), including aborting the build on an unrecoverable error (17), detecting layer misalignment (18), or detecting an unexpected surface hole (19).
• Remote access: a processor that responds to a remote status request from the machine vision system (20).

Litigation and PTAB status (as surfaced in the searches)

• District court (asserted patent). US 8,747,097 is one of the patents asserted in Stratasys, Inc. v. Shenzhen Tuozhu Technology Co. Ltd. et al., E.D. Tex. (Judge Rodney Gilstrap), Case Nos. 2:24-cv-00645-JRG and 2:24-cv-00644-JRG, with a later-filed 2:25-cv-00465-JRG consolidated in. The ’097 appears on the face of the court's claim construction order listing the patents-in-suit (Docket No. 169 in 2:24-cv-00644). Google Patents also lists a W.D. Tex. case, 1:24-cv-01511, on this family.
• PTAB. IPR2025-00354, Shenzhen Tuozhu Technology Co., Ltd. v. Stratasys, Inc., was filed 2024-12-23 against US 8,747,097 (Application 13/556,368, Tech Center 1700). Institution decision date is listed as 2025-06-12; public trackers label the proceeding "Not Instituted – Procedural" with a pending Director Review (Petitioner filed a request for Director Review on 2025-07-11 after the Board granted Patent Owner's Fintiv-based discretionary denial, arguing its later-filed, Tesla-style stipulation should change the result). Google Patents tags this PTAB event "Not Instituted - Procedural."
• Jury verdict (Sept. 2026). News reporting indicates a Texas jury found four Stratasys patents infringed by Bambu Lab, awarding roughly $27.6M in past damages (verdict/entry dated Sept. 17–18, 2026), with no permanent injunction; Bambu stated it will seek post-trial relief and appeal. Important caveat: the reported damages were allocated to the ’713 (purge tower), ’357, and pressure-detection patents, and the ’660 patent was held invalid by the PTAB — the ’097 is not identified in those reports as a patent for which damages were awarded. I cannot confirm from the available results whether the ’097 was dismissed, dropped, or found not infringed before verdict.

Federal Circuit / CAFC 2026

I could not identify an authoritative Court of Appeals for the Federal Circuit 2026 docket specifically captioned to US 8,747,097. Reporting confirms Bambu Lab publicly stated its intent to appeal the E.D. Tex. judgment (appeals from that court go to the Federal Circuit), but no ’097-specific CAFC appeal number was surfaced. I should flag this as uncertain / not confirmed rather than assert a docket exists.

Uncertainty notes

1. Claims source. The authoritative full text provided for US 8,747,097 is truncated before the claims section. The claim breakdown above is drawn from the corresponding pre-grant publication US 2012/0286453 A1 (20 claims; claim 1 the sole independent claim). Granted-claim wording can differ from the published version if claims were amended during prosecution, so treat the claim-1 wording as high-confidence but not independently verified against the granted text. I found no indication of a second independent claim, but I cannot fully rule one out.
2. Date discrepancies (priority 2010-08-18 vs. 2010-08-17; filing 2012-07-24 vs. 2012-07-23; grant 2014-06-10 vs. 2014-06-09) exist across public databases; I have not resolved which is correct.
3. Litigation specifics (which patents remain live in the 2026 trial, the exact PTAB disposition of IPR2025-00354 after Director Review, and any CAFC appeal number) rest on secondary aggregators and news reports, not on primary docket/PTAB records retrieved here.

Sources: Google Patents (patents.google.com/patent/US8747097), Unified Patents patent portal (portal.unifiedpatents.com/patents/patent/8747097), Justia publication page for US 2012/0286453 A1 (patents.justia.com/patent/20120286453), RPX Empower / GreyB PTAB trackers for IPR2025-00354, and E.D. Tex. claim construction order and briefing excerpts (courtlistener.com docket 69028070; archive.org court filings for gov.uscourts.txed.232140).

I'll research litigation involving US patent 8747097. Let me search multiple sources.

Let me dig deeper into the specific case details and current status, including the trial outcome.

Litigation involving U.S. Patent No. 8,747,097

Patent identified: U.S. 8,747,097 B2 — "Networked three-dimensional printer with three-dimensional scanner" (App. No. 13/556,368; priority 2010-08-18; granted 2014-06-10). Original assignee MakerBot Industries LLC; current assignee Stratasys, Inc. (assignment effective 2022-06-30). All litigation below arises from the Stratasys v. Bambu Lab dispute.

(Note on dating: your brief states the current date as April 26, 2026, but the source material retrieved includes events dated September 2026 — including the first jury verdict. I report what the sources show and flag the inconsistency rather than resolve it.)

1. Stratasys, Inc. v. Shenzhen Tuozhu Technology Co., Ltd., et al. (patent infringement)

Key point for '097: This patent sits in the second case (the "-645" set), which also asserts U.S. 10,569,466; 11,167,464; 8,747,097; 11,886,774; and 8,562,324. It was not among the four patents tried in the first jury trial (see below). Stratasys has stated the second case "does not yet have a trial date."

2. BambuLab USA Inc., et al. v. Stratasys, Inc. (declaratory judgment — mirror action)

3. Shenzhen Tuozhu Technology Co., Ltd., et al. v. Stratasys, Inc. — IPR2025-00354 (PTAB)

Contrast with sibling IPRs: Of Bambu Lab's four PTAB challenges filed December 2024, institution was granted on three (e.g., U.S. 9,592,660, 9,421,713, 8,562,324) but denied as to U.S. 8,747,097, making the '097 the one Stratasys patent "spared" in that round.

Patents in the co-pending consolidated litigation (context)

• First case, 2:24-cv-00644 (which was tried Sept 17, 2026): U.S. 9,421,713 (claims 1, 5, 6, 16, 17); 9,592,660 (claims 1, 7); 7,555,357 (claims 1, 2, 8); 9,168,698 (claims 1, 9, 10); 10,556,381 (claims 1, 11).
• Second case, 2:24-cv-00645 (contains '097): 10,569,466 (claims 1, 5, 10, 17, 19); 11,167,464 (claims 1, 12); 8,747,097 (claims 1, 12, 16, 18); 11,886,774 (claims 1, 6, 8); 8,562,324 (claims 1, 11, 19).

Jury verdict (first case only): On September 17, 2026, an E.D. Tex. jury found the four tried patents valid and infringed and awarded Stratasys ~$27.6 million in past damages, with willful infringement. Defendants were Shanghai Lunkuo Technology, Tuozhu Technology Ltd., Shenzhen Tuozhu Technology, and Bambulab Ltd. Bambu Lab announced it will seek post-trial review and appeal. U.S. 8,747,097 was not tried in this verdict; it remains in the untried second case.

Summary

Yes — litigation involving U.S. 8,747,097 exists. It appears in three connected proceedings:

1. Stratasys, Inc. v. Shenzhen Tuozhu Technology Co., Ltd. et al., E.D. Tex. 2:24-cv-00645-JRG (filed ~Aug. 8, 2024) — '097 affirmatively asserted (claims 1, 12, 16, 18); now part of consolidated case 2:25-cv-00465-JRG, pending, no trial date set.
2. BambuLab USA Inc. et al. v. Stratasys, Inc., W.D. Tex. 1:24-cv-01511 (filed Dec. 9, 2024) — declaratory judgment seeking to invalidate/find non-infringement of '097; status uncertain.
3. IPR2025-00354 (PTAB, filed Dec. 23, 2024) — inter partes review petition against '097 by Shenzhen Tuozhu/Bambu entities; not instituted, leaving the patent intact.

Important caveat: No final outcome for the '097 patent has been identified. The prominent $27.6M verdict of September 2026 concerned different Stratasys patents, not U.S. 8,747,097. I could not independently confirm a disposition of the W.D. Tex. declaratory-judgment action from the available sources — that item should be verified against PACER/Unified Patents before being relied upon.

Primary sources: Google Patents, US8747097B2 (https://patents.google.com/patent/[US8747097](/patent/US8747097)/en); Unified Patents portal (https://portal.unifiedpatents.com/patents/patent/8747097); GreyB/IPVerse IPR2025-00354 case page (https://ipverse.greyb.com/ptab-web/cases/case-details/IPR2025-00354); 3D Printing Industry (https://3dprintingindustry.com/news/stratasys-vs-bambu-lab-lawsuit-update-inside-ams-silent-legal-showdown-[243862](/patent/243862)/); 3DPrint.com (https://3dprint.com/[333013](/patent/333013)/stratasys-wins-27-6m-in-patent-case-against-bambu-lab/); TCT Magazine (https://www.tctmagazine.com/stratasys-awarded-27-6-in-damages-in-first-of-two-patent-infringement-cases-against-bambu-lab/); E.D. Tex. joint pretrial order (https://www.archive.org/download/gov.uscourts.txed.[232140](/patent/232140)/gov.uscourts.txed.232140.340.0.pdf).

I'll start by verifying what the structured block says versus what the patent's own litigation metadata shows, then search for proceeding-level detail.

I found a live proceeding the ODP block missed. Let me dig into its details and check for any other PTAB activity on the '097 patent.

Let me pin down the Director Review date, check for Federal Circuit activity, and confirm no other petitioner has challenged the '097 patent.

⚠️ Data discrepancy — the structured block is wrong for this patent

The "PTAB proceedings on file" block (USPTO ODP) returns zero AIA trial proceedings for US 8,747,097. That is not accurate. There is one AIA trial proceeding on file — IPR2025-00354 — which was filed 2024-12-23 and discretionarily denied institution by the Director on 2025-06-12. The proceeding is even flagged in the patent's own Google Patents litigation metadata ("PTAB case IPR2025-00354 filed (Not Instituted - Procedural)").

Two caveats on that Google Patents entry, so nobody mis-reads it:

• The "Petitioner: Unified Patents PTAB Data" line is a data-source attribution for the litigation block, not the identity of the petitioner. Unified Patents is not in this chain. The petitioner is Shenzhen Tuozhu Technology Co., Ltd. (Bambu Lab's parent). See RPX Empower case page.
• ODP's silence is best explained by ingest/indexing of a proceeding that was never instituted (no Institution Decision → no trial → no FWD in the trial docket tables). Treat the search-derived record below as live until ODP catches up.

Proceedings overview

There is one AIA trial proceeding against US 8,747,097 — IPR2025-00354 (Shenzhen Tuozhu v. Stratasys, filed 2024-12-23) — and its status is institution denied (discretionary, § 314(a) / Fintiv), Director Review denied; zero proceedings have reached an FWD, zero claims have been canceled or sustained on the merits, and there is no settlement and no Federal Circuit appeal — which means the patent's claims are entirely untested at the PTAB and a defendant today faces a patent with no IPR-killed claims and no estoppel to exploit, but also a patent whose owner has now twice been told by the Board/Director that these claims were never even reached on the merits.

IPR2025-00354 — Shenzhen Tuozhu Technology Co., Ltd. v. Stratasys, Inc.

• Type: Inter Partes Review (35 U.S.C. §§ 311–319) — U.S. Patent 8,747,097 B2, Technology Center 1700
• Filed: 2024-12-23 (accorded/docketed 2025-01-14)
• Status: Institution denied — Director's discretionary denial under 35 U.S.C. § 314(a) (Granting Patent Owner's Request for Discretionary Denial and Denying Institution of Inter Partes Review); Petitioner's request for Director Review subsequently denied. Google Patents renders this as "Not Instituted - Procedural." Aggregator pages (IP Verse) still show "Pending Director Review," which is stale.
• Judge panel: None — no APJ panel. The institution decision is a Director decision, captioned "Before COKE MORGAN STEWART, Acting Under Secretary of Commerce for Intellectual Property and Acting Director of the United States Patent and Trademark Office." This is a signature feature of the post-2025-02-28/2025-03-26 Fintiv regime, under which § 314(a) discretionary denials are decided by the Director rather than a three-APJ panel.
• Petition grounds: Not verified from the sources I retrieved — do not assume. The petition is Paper 2 (2024-12-23) with supporting declaration of Dr. Andrew Wolfe (Ex. 1003). Because the Director never reached the merits, no public document confirms which claims or which § 102/§ 103 grounds were actually presented. What is public is that the '097 patent's asserted claims were being construed in the parallel EDTX case, including claim 11 ("pass/fail evaluation") and "a machine vision system configured to capture and analyze image content" (Stratasys' Opening Claim Construction Brief, Ex. D-3/D-4) — which tells you the litigation theory, not the petition theory.
• Institution decision: Denied 2025-06-12 (Paper 11). Reasoning, verbatim: the "projected final written decision due date in the Board proceeding is July 14, 2026," while "the district court's scheduled trial date is June 1, 2026, and the time-to-trial statistics suggest trial will begin in July 2026"; therefore "it will be inefficient to maintain two parallel proceedings." The Director rejected Petitioner's April 8, 2025 Sotera stipulation as insufficient: "Petitioner's invalidity arguments in the district court, however, are more expansive and include combinations of the prior art asserted in these proceedings with unpublished system prior art, which Petitioner's stipulation is not likely to moot," citing Motorola Sols. v. Stellar, LLC, IPR2024-01205, Paper 19 (Mar. 28, 2025). Order: "Patent Owner's request for discretionary denial is granted; and … the Petition is denied, and no trial is instituted." Full text: Director Discretionary Decision, IPR2025-00354 (2025-06-12).
• Final Written Decision: None. No FWD exists and none can exist — institution was denied, so the merits were never reached. No claim was canceled; no claim was held patentable. Any statement that the PTAB "upheld" or "invalidated" the '097 claims is false.
• Settlement / termination: No settlement. The proceeding terminated by denial of institution. (No confidentiality issue.)
• Appeal: No Federal Circuit appeal of this proceeding — a denial of institution is non-appealable under § 314(d); there is no FWD to appeal. Petitioner instead sought Director Review (request at Paper 12; authorized response at Paper 13) and offered an "Enhanced Tesla" stipulation modeled on Tesla, Inc. v. Intellectual Ventures II LLC, IPR2025-00217, Paper 9 (June 13, 2025), arguing it "could not have reasonably foreseen" the post-February-2025 Fintiv shift. Director Review was denied ("Having considered the request and response, it is: ORDERED that the request for Director Review is denied") — see the order in the PTACTS petition record. Caveat: I could not verify the exact calendar date of the Director Review denial order from the retrieved sources; the order itself is public, the date I did not confirm. Separately, this proceeding was cited as an exemplar of retroactive Fintiv denials in the June 27, 2025 amicus brief in In re Motorola Solutions, Nos. 24-0134/24-1864 (Fed. Cir.) (amicus brief PDF) — that is a systemic APA challenge to Fintiv, not an appeal of this case.
• Defensive value: Mixed, and the upside is real. On the one hand, Stratasys has now held a merits-free win: the '097 claims have never been tested by the Board, so there is no cancellation and no FWD reasoning to borrow for an invalidity story. On the other hand, the denial was purely procedural and the asserted claims remain exposed to the identical art in the very EDTX case that is already barreling toward a June 2026 trial — and for Tuozhu itself, the § 315(b) one-year bar (complaint served August 2024) has run, so its IPR shot at the '097 patent is spent (and a time-barred petitioner cannot fix that via joinder, § 315(c)/(b)).

Strategic summary

Claim status: everything is UNTESTED at the PTAB. There is no canceled claim, no sustained claim, no certificate of correction, and no certificate issuing under § 318(b). All challenged/asserted claims — including claim 11 and the machine-vision claims being construed in EDTX — remain live and unadjudicated. For a defendant, that cuts both ways: you cannot tell a judge or an adversary that "the PTAB already killed this claim," but you also inherit a clean slate with none of the claim-construction or estoppel baggage that an FWD would have created. Practically, this means any invalidity case must be built in district court from scratch, and the '097 patent's file history plus the (public) IPR petition exhibits are a free starting kit — the EDTX claim-construction record expressly cites Stratasys' own IPR petition (Ex. D-3) and the Wolfe declaration (Ex. D-4).

Estoppel landscape: no § 315(e)(2) estoppel attaches to the '097 patent, for anyone. Because no IPR was instituted, § 315(e)(2) never triggered — neither for Shenzhen Tuozhu nor for any real party in interest or privy. So the full universe of § 102/§ 103 grounds, including the art in the denied petition and the "unpublished system prior art" the Director flagged, remains available in district court. That is the silver lining of the denial. What is foreclosed is a second bite at the PTAB by the same petitioner: Tuozhu (and its RPIs/privies) is now time-barred under § 315(b) on this patent and, having been denied once, would also face § 325(d) and General Plastic headwinds. Any new party that is served today still has a full § 315(b) window — but must reckon with the current Director practice, under which an EDTX defendant with a trial date near or ahead of the 12-month FWD deadline faces discretionary denial exactly as Tuozhu did.

Pattern signals. (1) This is not a lone petition: Tuozhu filed roughly nine IPRs across six Stratasys patent families in December 2024–February 2025 — IPR2025-00257 ('660 heated build platform), IPR2025-00311 ('324 networked printing), IPR2025-00321 ('713 purge towers), IPR2025-00354 ('097), IPR2025-00438, IPR2025-00531 ('698), IPR2025-00532, IPR2025-00585 — per Stratasys' own discovery reference list. Three of those (-00257, -00311, -00321) were instituted, i.e., Bambu won institution on 3 of 4 decided petitions and lost only on '097. (2) No defensive aggregator. "Unified Patents" appears only as a data vendor in the Google Patents litigation block; the petitioner is the litigation defendant itself. (3) Stratasys has historically been hard to invalidate at the PTAB — in the earlier Stratasys v. Afinia campaign, the Board denied institution on all 14 grounds across IPR2015-00284, -00287 and -00288 (Sterne Kessler / National Law Review analysis). Combined with the '097 denial, the pattern is that Stratasys patents tend to survive the institution stage. (4) No appeal activity: the '097 patent has never been the subject of a Federal Circuit merits appeal.

Recommended next steps

• If you are a defendant being asserted on the '097 patent today: do not assert to the court that any claim is invalidated — that would be sanctionable. Instead, use the procedural record: the 2025-06-12 Director decision is admissible context that Stratasys has never defended these claims in an AIA trial, and the denial was expressly not a merits determination ("Petition is denied under 35 U.S.C. § 314(a)"). Pull Paper 2 and Dr. Wolfe's Ex. 1003 from PTAB E2E / PTACTS as a ready-made invalidity roadmap, and pair it with the unpublished system art the Director specifically identified as outside the Sotera stipulation — that art is untouched and unstipulated.
• Sequencing caution: if you intend to file an IPR, note that the pending EDTX consolidated case (Stratasys v. Shenzhen Tuozhu, No. 2:25-cv-00465-JRG, trial scheduled 2026-06-01) will not control your own Fintiv posture unless you are a party to it — but the current Director practice (March 26, 2025 "Interim Processes for PTAB Workload Management" memo; "[a] timely Sotera stipulation will not be dispositive by itself") means an EDTX trial date that lands near your projected FWD invites the same denial. File early, and build a compelling-merits record.
• If a proceeding is pending on your docket: none is. The '097 patent has no open PTAB trial, so there is no institution deadline, no oral hearing, and no 12-month § 316(a)(11) FWD due date running. The only relevant dates on file are historical: the projected FWD deadline would have been 2026-07-14 had institution been granted — which is precisely why the Director denied.
• Watch item: the In re Motorola Solutions / Apple v. Stewart APA challenges to retroactive Fintiv denials, in which this very proceeding is cited as an example. If those challenges succeed, Tuozhu's denial could theoretically become vulnerable — but even then, § 315(b) would still bar Tuozhu from re-filing on the '097 patent.

I'll research the assignment records, litigation, and correspondent details for this patent.

US 8747097 B2 — Ownership & Assignment Reconstruction

Patent: Networked three-dimensional printer with three-dimensional scanner
App. no.: 13/556,368 · Filed: 2012-07-24 · Issued: 2014-06-10 · Priority: 2010-08-18 (parent 12/858,622)
Current assignee of record (per Google Patents legal events): Stratasys, Inc.

⚠️ Sourcing note before you read further. The USPTO Assignment Center (assignmentcenter.uspto.gov / assignment.uspto.gov) did not return record-level data for this patent inside this working session — the search surface is JS-driven and returned only Google Patents' mirrored "Legal Events," which reproduce the existence and dates of three recorded filings but not the reel/frame or the correspondent-of-record fields. I am not going to invent reel/frame numbers or attorney names. Below, every reel/frame and correspondent cell is explicitly marked NOT RETRIEVED, with the exact re-query to fill it. The conveyance types, assignors, and assignees below are grounded in the recorded data.

Inventors

Unusual patterns / timing flags:

• Sole inventor = founder/CEO. The entire asserted-in-2024 patent rests on one inventor, so there is no "all inventors left" question — there is only one, and he is the company.
• Co-founder exodus before filing. Co-founder Zachary Smith was pushed out in April 2012, roughly three months before this continuation was filed, over the open-source/IP-strategy dispute (he publicly objected to the patenting pivot in late 2012). This is a pre-filing management rupture, not a post-filing fire-sale signal.
• Inventor exit ~11 months post-filing — but acquisition-driven, not distress-driven. Pettis transitioned out of the MakerBot CEO seat into a Stratasys role around the June–September 2013 acquisition (replaced by Jennifer Lawton). That is at the ~12-month boundary from the 2012-07-24 filing. The cause is documented as the Stratasys acquisition, not an asset dump — see "Original assignee" and signal 6 below.
• Assignee continuity: the inventor assignment was recorded 2012-10-16, i.e., after filing — normal for an employee/employment-agreement assignment executed as part of a financing or diligence package rather than at-file.

Original assignee

MakerBot Industries, LLC (Brooklyn, NY) — the entity named at issue on the grant.

• Primary line of business: Desktop/consumer 3D printers and the surrounding ecosystem ("MakerBot 3D Ecosystem"). Products shipped: Cupcake CNC (2009), Thing-O-Matic (2010), Replicator 2 / Replicator 2X (2012), plus the MakerBot Digitizer desktop 3D scanner and the Thingiverse content platform.
• Did it ship a product embodying the claims? Yes, at least in substantial part. The '097 disclosure is a networked 3D printer with a 3D scanner/camera and remote web/monitoring UI; MakerBot shipped networked desktop printers and a companion desktop 3D scanner (Digitizer) and operated a networked content platform. Revenue context from the merger deck: FY2012 revenue $15.7M; Q1-2013 $11.5M; ~22,000 printers sold by acquisition.
• Current status: Acquired — not dissolved, not bankrupt. Stratasys Ltd. announced the acquisition 2013-06-19/20 (stock-for-stock; ~$403M upfront, up to ~$604M with earn-out). MakerBot operated as a Stratasys subsidiary, then on 2022-05-12 Stratasys agreed to combine MakerBot with Ultimaker (NPM Capital), with Stratasys contributing MakerBot's assets, investing $47M, and retaining a 45.6% minority stake in the combined entity (UltiMaker; closed 2022-08-31). Stratasys retained ownership of the MakerBot patents — which is why the '097 chain lands at Stratasys, Inc.

Assignment timeline

Three recorded filings appear in the USPTO-sourced record (surfaced via Google Patents legal events). Reel/frame and correspondent are NOT RETRIEVED for any of them.

• Executed date NOT RETRIEVED / recorded 2012-10-16 — Reel NOT RETRIEVED

  • Conveyance: Assignment (recorded in Google Patents as "ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS)"; treated as Assignment)
  • Assignor: Nathaniel B. Pettis
  • Assignee: MakerBot Industries, LLC
  • Correspondent: NOT RETRIEVED — re-query required to test the repeat-correspondent signal
  • Context: Original acquisition — inventor-to-employer assignment of the '097 application (and family) to the operating company.

• Executed date NOT RETRIEVED / recorded 2013-10-08 — Reel NOT RETRIEVED

  • Conveyance: Change of Name / Address change (no change in beneficial ownership — Google Patents logs it as "ADDRESS CHANGE," assignor and assignee both MakerBot Industries, LLC)
  • Assignor: MakerBot Industries, LLC
  • Assignee: MakerBot Industries, LLC
  • Correspondent: NOT RETRIEVED
  • Context: Internal administrative update only — coincides with the Stratasys acquisition period but is not a transfer.

• Executed date NOT RETRIEVED / recorded 2022-07-19 — Reel NOT RETRIEVED

  • Conveyance: Assignment (Google Patents: "ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS)"; treated as Assignment)
  • Assignor: MakerBot Industries, LLC
  • Assignee: Stratasys, Inc.
  • Correspondent: NOT RETRIEVED
  • Context: Internal reorganization / intra-group consolidation — Stratasys pulled the MakerBot patent title up from the subsidiary (which it had owned since 2013) into the operating parent, coincident with the 2022 MakerBot→UltiMaker contribution where Stratasys kept the IP.

How to fill the gaps (one query, two minutes): go to https://assignmentcenter.uspto.gov/, search by patent number 8747097 (or app 13/556,368), and capture for each hit: Reel/Frame, Conveyance, Execution Date, Correspondent name + firm + address. Because there are only three entries across a 12-year span, the repeat-correspondent test is quick to run: if the same attorney/firm filed both the 2012-10-16 and 2022-07-19 recordings, that is a mundane in-house-succession artifact; if a single outside firm filed both, it still proves nothing on its own given Stratasys's size.

Cross-check note: Google Patents shows priority 2010-08-18 and anticipated expiration 2030-08-18; the Unified Patents portal shows 2010-08-17 / 2030-08-17. One-day discrepancy — flag it but do not "correct" it.

Timeline diagram

timeline
    title Ownership of US 8747097
    2010 : Priority application filed by Pettis
    2012 : Continuation filed by MakerBot
         : Inventor assignment recorded to MakerBot
    2013 : MakerBot acquired by Stratasys
         : MakerBot address change recorded
    2014 : Patent issues as US 8747097
    2022 : Patent assigned to Stratasys Inc
    2024 : Stratasys sues Bambu Lab in Texas
    2025 : Bambu Lab files IPR petitions

NPE / troll-pattern signals

1. Shell-entity transfer — NOT PRESENT.
   The chain is Pettis → MakerBot Industries, LLC (operating desktop-3D-printer maker) → Stratasys, Inc. (public operating AM manufacturer, Nasdaq: SSYS). No assignee bears an "IP / Patents / Licensing / Holdings / Ventures" suffix; no assignee is a registered-agent-service address; no single-purpose Delaware/Texas LLC appears. The recorded 2022-07-19 transfer is to a public operating parent, not a licensing vehicle. (Reel/frame NOT RETRIEVED, so this call rests on the recorded party identities and dates, not on a reel number.)

2. Known asserter in the chain — NOT PRESENT.
   Neither assignee matches the enumerated NPE list (Acacia, Marathon Patent Group, Intellectual Ventures, IPNav, Wi-LAN, Mosaid/Conversant, Vringo, Pendrell, Innovatio, MPHJ, Lumen View, Round Rock, Document Generation Corp, Spangenberg entities). Stratasys, Inc. appears in the record as the plaintiff, and both MakerBot and Stratasys are operating manufacturers. Unified Patents' own portal lists Parent Company: Stratasys Ltd. — i.e., an operating company, not an asserter entity.

3. Repeat correspondent across the chain — UNclear / NOT DETERMINABLE ON THIS RECORD.
   Correspondent-of-record was NOT RETRIEVED for the 2012-10-16, 2013-10-08, or 2022-07-19 entries. With only three entries over 12 years and two of them being a mere address change, the structural precondition for this signal (multiple transfers by one lawyer) barely exists. Do not mark this present without pulling the correspondent fields.

4. Cascading transfers — NOT PRESENT.
   Two substantive assignments (2012-10-16 inventor→company; 2022-07-19 subsidiary→parent), separated by ~9 years 9 months, with a non-transferring 2013-10-08 address change in between. No chained LLCs, no multiple transfers inside 24 months, no shared registered-agent addresses.

5. Pre-litigation transfer — NOT PRESENT.
   The last transfer is 2022-07-19; Stratasys filed the Texas complaints 2024-08-08 (2:24-cv-00644 lead and 2:24-cv-00645 member, E.D. Tex.; plus 1:24-cv-01511, W.D. Tex.; and the Bambu DJ action 2:25-cv-00465, E.D. Tex.). That is ~25 months, far outside the 6-month window. The transfer was driven by the MakerBot/Ultimaker 2022 reorganization, not by litigation sequencing.

6. Bankruptcy fire-sale — NOT PRESENT.
   No Chapter 7/11 anywhere in the chain. MakerBot was acquired in a stock merger (~$403M upfront, up to ~$604M with earn-out) and its IP was retained by Stratasys; the 2022 MakerBot→UltiMaker combination was a JV/deconsolidation (Stratasys kept 45.6% and kept the patents), the opposite of a distressed sale.

7. Privateering — NOT PRESENT.
   Stratasys asserts the '097 in its own name as plaintiff in Stratasys, Inc. v. Shenzhen Tuozhu Technology Co., Ltd., et al. The defendants are direct competitors (Bambu Lab / Shenzhen Tuozhu) in the desktop 3D-printing market Stratasys and MakerBot compete in. No NPE is asserting "on behalf of" Stratasys; Stratasys is the party of record. The asserted set spans ten Stratasys/MakerBot patents, of which the '097 is one.

8. Defensive aggregator (anti-NPE) — NOT PRESENT.
   Chain terminates at Stratasys, Inc., an operating company that is actively asserting — not at RPX, AST, LOT, Unified Patents, or OIN.
   Important disambiguation: the PTAB proceeding surfaced on the Google Patents page — IPR2025-00354 — is not a Unified Patents defensive action. It appears on Unified Patents' portal because Unified publishes the PTAB dataset; the petitioner is Shenzhen Tuozhu Technology Co., Ltd. et al. (Bambu Lab) against Stratasys, Inc. et al. (filed 2024-12-23; institution decision 2025-06-12; Google Patents lists the status as "Not instituted – procedural", while third-party trackers show it as pending Director Review — flag, don't resolve). Bambu also filed sibling IPRs against the family (e.g., IPR2025-00311 on the '324, IPR2025-00611 on the '774), with Sotera-style stipulations in the district cases. This is competitor-vs-competitor patent warfare, not defensive aggregation.

Verdict

Operating-company assertion.

Justification, on the recorded entries: the chain's terminal assignee is Stratasys, Inc. (recorded 2022-07-19 from MakerBot Industries, LLC), the U.S. operating arm of Stratasys Ltd., a public additive-manufacturing manufacturer whose Parent Company designation and product line are confirmed on the Unified Patents portal; the assignor MakerBot Industries, LLC likewise shipped consumer 3D printers and the Digitizer scanner embodying the disclosure. Stratasys is asserting the '097 as plaintiff against a direct competitor (Bambu Lab / Shenzhen Tuozhu) in 2:24-cv-00644 / 2:24-cv-00645 (E.D. Tex., filed 2024-08-08) and 1:24-cv-01511 (W.D. Tex.), with Bambu counter-attacking via IPR2025-00354. Every NPE signal is absent or unverifiable-on-this-record; the only open question is the correspondent on the three recorded filings, which is a completeness gap, not an NPE indicator.

Verify at:

• USPTO Assignment Center — https://assignmentcenter.uspto.gov/ (search patent 8747097 or app 13/556,368) and https://assignment.uspto.gov/patent/index.html
• Google Patents legal events — https://patents.google.com/patent/US8747097/en
• Unified Patents portal — https://portal.unifiedpatents.com/patents/patent/8747097
• Litigation tracker — https://portal.unifiedpatents.com/litigation/Texas%20Eastern%20District%20Court/case/2%3A24-cv-00645

Residual gaps to close (ranked)

1. Reel/frame for the 2012-10-16, 2013-10-08, and 2022-07-19 recordings — currently NOT RETRIEVED. This is the single largest hole in the analysis; every "not present" above rests on party identity and date, not on a reel citation.
2. Correspondent of record on all three entries — needed only to formally dispose of signal 3; low expected probative value given the 12-year, three-entry, single-substantive-transfer profile.
3. Family follow-through: confirm which sibling applications (e.g., US8282380, US20120092724A1, and the US12086475B2 continuation) carry matching assignment chains to Stratasys, since the Bambu litigation asserts a ten-patent set across the MakerBot and Stratasys families.

I'll research the specific prior-art citations for US 8,747,097. Let me run targeted searches against USPTO/Google Patents citation records.

Let me pull the citation list and the IPR petition's prior-art references specifically.

Key lead found: the IPR2025-00354 record names specific prior-art references relied on against the ’097. Let me pin down each reference.

Retrieval status: what I could and could not get

USPTO/patent-database check for the literal number 8747097. The record returned is US 8,747,097 B2, "Networked three-dimensional printer with three-dimensional scanner," App. No. 13/556,368, inventor Nathaniel B. Pettis, original assignee MakerBot Industries, LLC, current assignee Stratasys, Inc. (per the Google Patents record supplied; the Unified Patents portal shows App. 13,556,368 / grant 2014‑06‑09 / priority 2010‑08‑17). No similarly-numbered patent (e.g., 8,747,096 / 8,747,098) is substituted below; the ID is used literally.

Honest limitation up front. I could not retrieve the face-of-patent "(56) References Cited" block for US 8,747,097 itself. The authoritative text in the record is truncated inside the Detailed Description, before the claims and before any citation list, and my searches did not surface the (56) field. What the portal-level data shows is the volume, not the contents: the Unified Patents portal lists Patent Art (66) and Non‑Patent Literature (33) on this patent, plus Referenced By (28) — and the last of those is forward citation activity, not prior art, so it must not be mixed into the analysis. I am therefore not able to enumerate "each patent citation" as the task requests, and I will not invent numbers or dates to fill the list.

What I can do — and what follows — is give the references that are documented as having actually been applied or considered against this specific patent, drawn from the prosecution and the IPR2025‑00354 record. Those are the ones with real invalidity weight.

The prior art actually applied/considered against the ’097

The richest source retrieved is the PTAB party briefing in **IPR2025-00354, Shenzhen Tuozhu Technology Co., Ltd. v. Stratasys, Inc., Paper No. 2 (filed Dec. 23, 2024)**, which challenges US 8,747,097 and is docketed as Exhibit D‑3 in the parallel E.D. Tex. case. That document names the following six references and, critically, quotes the operative claim-1 language:

"a scanner that captures three-dimensional information from an object being fabricated within the build volume during a print job executing on the three-dimensional printer" and "providing a status of the print job for remote display by capturing and analyzing image content from a three-dimensional scanner."

That quotation is an important refinement of the earlier summary in this file: the earlier section derived claim 1 from pre-grant publication US 2012/0286453 A1 and flagged that the granted wording was unverified. The IPR record now corroborates the granted claim 1 and shows it carries a "during a print job executing" limitation on the scanner — narrower than the published version. This materially changes the anticipation picture (see below).

What I will not assert

I was unable to verify the patent/publication numbers, dates, or assignees for Knighton, Luo, Mazumder, Bonassar, Adusumilli, and Anderson. I am therefore not supplying full citations, publication dates, or filing dates for them. My search budget expired before I could resolve them. Treat the names and quoted passages as accurate (they are quoted from the record) but the bibliographic fields as open items requiring a fresh lookup. Any analyst following up should pull EX1004–EX1010 from the IPR2025-00354 exhibit list on PTAB E2E / PTACTS, which will give the exact numbers and dates.

§ 102 anticipation assessment

• No reference in this set is confirmed to anticipate claim 1 standing alone. The record frames Knighton, Luo, Anderson, Mazumder, and Bonassar as obviousness combinations (Grounds 1, 2A, 2B, 3), i.e., § 103 — not § 102. Claim 1 requires the concurrence of (a) a 3D scanner capturing data from an object being fabricated during a running print job, (b) a machine vision system analyzing that content to derive print-job status, (c) a network interface, and (d) a web server that remote-serves that status. Knighton supplies (a); Bonassar supplies (a)+(b) in the deposition-monitoring context; Anderson/Luo supply (c)+(d). That is a classic combination theory.
• Adusumilli is affirmatively not anticipatory of granted claim 1, because its scan precedes fabrication — the applicant's amendment ("during a print job executing on the three-dimensional printer") was made to clear it.
• Adusumilli and Anderson were before the Examiner; Knighton, Luo (as combined), Mazumder, and Bonassar were not. That distinction drove the petitioner's § 325(d) argument that the grounds were not "substantially the same" as what the Examiner considered — a point the Board never reached on the merits because the proceeding was discretionarily denied on Fintiv grounds and the Director declined to institute (a July 2026 PTAB final-decision date is referenced in reporting, which is internally inconsistent with a denial — treat with caution).
• Dependent-claim exposure is highest at claims 9–19 (inspection, pass/fail, error detection, abort-on-error, layer misalignment, unexpected surface hole) because those map onto Bonassar's "optical sensors … continuously monitor" and Mazumder's process-monitoring teachings.

Contradictions and flags

1. Date contradiction in the working file. This task states "Current Date: April 26, 2026," but the previously generated section reports a September 2026 jury verdict and a 2026‑09‑29 fetch date. A Sept. 2026 verdict cannot post-date an April 26, 2026 present. I flag this rather than reconcile it; the litigation timeline in the earlier section should be treated as unverified against the stated current date.
2. Granted vs. published claim 1. This section refines the earlier uncertainty note: the granted claim 1 contains the in-fabrication scanner limitation, which the published US 2012/0286453 A1 discussion did not emphasize. Not a contradiction, but it changes the § 102 analysis — flag for the final claim chart.
3. Citation count vs. citation list. The portal reports 66 patent references and 33 NPL items; I have substantively identified six. The task's instruction to cover "each patent citation" is not satisfied, and I am stating that plainly rather than padding the list.
4. "Referenced By (28)" is not prior art and has been excluded.

Sources

• Google Patents, US 8,747,097 B2 — https://patents.google.com/patent/US8747097
• Unified Patents portal — https://portal.unifiedpatents.com/patents/patent/8747097
• PTACTS document for IPR2025-00354 party briefing naming Adusumilli, Anderson, Knighton, Luo, Mazumder, Bonassar — https://ptacts.uspto.gov/ptacts/public-informations/petitions/[1557147](/patent/1557147)/download-documents
• E.D. Tex. Plaintiff's Opening Claim Construction Brief listing the IPR2025-00354 petition as Ex. D‑3 — https://ptacts.uspto.gov/ptacts/public-informations/petitions/[1557098](/patent/1557098)/download-documents
• RPX Empower IPR2025-00354 docket — https://litigation.rpxcorp.com/ptab/18355-shenzhen-tuozhu-technology-v-stratasys-incorporated-ipr-of-097
• GreyB/ipverse IPR2025-00354 case details — https://ipverse.greyb.com/ptab-web/cases/case-details/IPR2025-00354
• 3DPrintingIndustry, Stratasys v. Bambu Lab update (Director denial rationale) — https://3dprintingindustry.com/news/stratasys-vs-bambu-lab-lawsuit-update-inside-ams-silent-legal-showdown-[243862](/patent/243862)/

I'll pull the cited prior-art references for this patent and the key analogous art, then build the § 103 combinations.

Now let me pull the specific cited references and the IPR grounds.

Obviousness Analysis — U.S. 8,747,097 B2 under 35 U.S.C. § 103

Patent: US 8,747,097 B2, "Networked three-dimensional printer with three-dimensional scanner" (App. 13/556,368; priority 2010‑08‑18 per Google Patents / 2010‑08‑17 per Unified Patents; granted 2014‑06‑10). Continuation of 13/314,337, itself a CIP of 12/858,622.

Two process notes before the merits:

1. The "Prior Art section" of the page is only partially reproducible. The authoritative full text supplied to me is truncated before the claims and contains no "References Cited" block. The Google Patents/Justia record for US 8,747,097 shows a cited-reference list (the U.S. publication list is retrievable; foreign patent documents and non-patent literature are not), and Unified Patents reports the face of the patent carries Patent Art (66) and Non‑Patent Literature (33) items (https://portal.unifiedpatents.com/patents/patent/8747097). Everything below is tagged [verified from retrieved text], [on the face of the patent, disclosure not verified], or [class-of-art / not verified] so you can see exactly where the record thins out. I will not attribute disclosures to references I could not read.

2. Date conflict with the earlier sections. The litigation summary correctly flagged that the source material includes September 2026 events while the task header says April 26, 2026 (the platform clock says 2026‑09‑29). Nothing in the § 103 analysis turns on this, but the two prior sections and this one should be read as sharing that flagged inconsistency.

1. Governing law and framing

• The application was filed 2012‑07‑24 with priority to 2010‑08‑18 — before 2013‑03‑16 — so pre‑AIA § 103(a) applies. Prior art must separately qualify under pre‑AIA § 102 (including § 102(a), (b), (e)). The critical date is the 2010 effective filing date.
• Framework: Graham v. John Deere Co., 383 U.S. 1 (1966) (scope/content, differences, PHOSITA level, secondary considerations); KSR Int'l Co. v. Teleflex Inc., 550 U.S. 398 (2007) (predictable results, obvious to try, known techniques, design incentives); In re Kahn, 441 F.3d 977 (Fed. Cir. 2006) (articulated reasoning with rational underpinning); Wm. Wrigley Jr. Co. v. Cadbury Adams USA LLC, 683 F.3d 1356 (Fed. Cir. 2012) (the PHOSITA is a person of ordinary creativity).
• Hypothetical PHOSITA: a mechanical/electrical engineer or computer scientist with a bachelor's degree and ~2–4 years of experience in additive manufacturing (extrusion, jetting, or photopolymer systems), including machine control, sensor integration, and networked device management. This is a crowded, incremental field (see In re GPAC, 57 F.3d 1573 (Fed. Cir. 1995)).

2. Claim 1 limitation breakdown

The earlier section correctly flagged that the claim text comes from the pre‑grant publication US 2012/0286453 A1. One material upgrade to confidence: the E.D. Tex. claim-construction brief in Stratasys v. Shenzhen Tuozhu independently confirms granted-claim language for the '097 — it lists construction disputes over "a machine vision system configured to capture and analyze image content" ('097 cls. 1, 9–12, 14–18); "web server"/"server" ('097 cls. 1, 4, 5); "pass/fail evaluation" ('097 cl. 11); and "misalignment of layers" ('097 cl. 18) (https://ptacts.uspto.gov/ptacts/public-informations/petitions/[1557098](/patent/1557098)/download-documents). That corroborates both the published claim structure and the phrasing. It also confirms the four asserted claims — 1, 12, 16, 18.

Claims 2–3 (FDM / stereolithography) and 6–8 (stereoscopic / shape‑from‑motion / structured light) are, in substance, recitations of known alternatives, and claims 9–19 are the classic machine‑vision QC menu. Those are the easiest targets; claim 1 is the crux.

3. The reference library (as retrievable)

The strongest thing in the record is the applicant's own specification. The '097 description states that sensor 134 "may include a three‑dimensional scanner using optical techniques (e.g., stereoscopic imaging, or shape from motion imaging), structured light techniques, or any other suitable sensing and processing hardware that might extract three-dimensional information from the working volume," and that the machine vision system "may support … imaging-based automatic inspection, process control, and/or robotic guidance functions … including … pass/fail decisions, error detection … shape detection, position detection, orientation detection, collision avoidance." The same paragraph concedes such arrangements are known ("a variety of arrangements and techniques are known in the art"). Under MPEP 2129, these are applicant admissions about the state of the art and the level of ordinary skill — usable to establish that claim elements 1[b], 1[c], and most of claims 6–19 recite known techniques, leaving only the architecture (putting them on a networked printer with a web server) as the potential point of novelty.

On-face cited references relevant to a § 103 case (partial list, from the Justia record for US 8,747,097, https://patents.justia.com/patent/8747097):

Independently verified non‑face references with real teeth:

• Kritchman & Gothait, US 7,628,857 B2 (Objet Geometries) — a 3D printing system with a controller 105 including processor 110, memory 115, software 120, and a communications unit 125 that enables transfer of data/instructions and can be located external to the printer communicating "over a wire and/or using wireless communications"; a printing nozzle detector mechanism whose detected "nozzle status data … may be computed and/or analyzed by a controller … using suitable executable code"; detection of problematic nozzles with printing‑coordinate adjustment; and automatic tray replacement enabling continuous, unattended consecutive builds. (patentimages storage PDF, uspto.report)
• Gothait, US 6,658,314 / US 7,225,045 (Objet) and Sachs US 5,204,055 / 5,807,437, Cima US 5,387,380, Hull US 4,575,330, Crump US 5,340,433 — the foundational additive‑manufacturing base (photopolymer jetting, powder/binder, stereolithography, FDM). [verified via reference lists in the retrieved grants]

4. Grounds of rejection

Ground 1 — Objet base + Kritchman '857 + Jung, in view of the web‑monitoring art (claim 1; claims 4, 5, 11, 20)

• 1[a], 1[b] (printer + build volume): Gothait/Crump/Hull/Sachs.
• 1[c] (sensing → analysis → machine status): Kritchman '857 discloses exactly the architecture — a detector mechanism feeding status data to a controller that computes/analyzes it in executable code and adjusts the process accordingly (nozzle‑status → coordinate adjustment). Substituting a 3D scanner of the build volume for a nozzle‑status detector is (i) expressly suggested by the '097 specification's own admission that build‑volume 3D scanning and machine‑vision inspection were known, and (ii) a predictable, art‑recognized substitution of one known machine‑status sensor for another — KSR's "known technique" and "predictable result" rationales.
• 1[d], 1[e] (network interface + web server for remote display): Jung's US 2009/0164379 / US 8,429,754 places 3D manufacturing machines under remote, credential‑based, network‑mediated control with object data files and quantitative monitoring — the same "distributed content on one hand, distributed fabrication resources on the other" concept the '097 abstract claims as its contribution. Layering a web server on that architecture is the classic Internet‑implementation of a known function: Muniauction, Inc. v. Thomson Corp., 532 F.3d 1318 (Fed. Cir. 2008) (adding Internet features to a known process, with no new technical effect, is obvious). Claims 4 (host a remote user), 5 (display sensor status), and 20 (respond to a remote status request) are thereby met.
• Motivation: both Objet‑lineage art and Jung address commercial/enterprise 3D printing where unattended, remotely supervised builds are the design objective; Kritchman '857's automatic tray replacement and nozzle compensation exist precisely to enable unattended running, and the only way to supervise an unattended run is remote status reporting.

Ground 2 — Critically: use the sibling family and the trend as context (admissions)

The '097 background concedes that "a more recent trend has emerged toward low-cost three‑dimensional prototyping devices suitable for hobbyists and home users" and that "a need has emerged for networking capabilities and network management for three‑dimensional printers." Under MPEP 2129 that admission supplies both motivation and reasonable expectation of success: the market was pulling networked, remotely monitorable, low‑cost printers. Combined with the web‑monitoring art, claim 1 collapses to "known printer + known build‑volume scanner + known vision analysis + known web monitoring," arranged in the only order the architecture permits.

Ground 3 — Claims 15–19 (actual vs. predicted comparison; abort; layer misalignment; surface hole)

• Kritchman '857: detecting a defect condition mid‑build and compensating/correcting via the controller — the same sense‑compare‑act loop.
• Menchik US 2006/0127153 A1: controller deriving build requirements from the CAD/print data set, which supplies the "expected" side of the comparison in claim 16 (comparing the physical 3D result to "the expected three‑dimensional result from a three‑dimensional model used by the three‑dimensional printer to fabricate the object").
• The '097 specification's machine‑vision list is expressly enabling of claims 15–19, and "misalignment of layers" (cl. 18) / "unexpected surface hole" (cl. 19) are the two canonical layer‑wise inspection defects — a design choice among known vision QC outputs.
• Aborting on an unrecoverable error (cl. 17) is the inherent counterpart to the compensation/abort logic of Kritchman '857 and to the fault‑handling of the '097 family's own queue‑management description (redirecting failed jobs).

Ground 4 — Claims 2, 3, 6, 7, 8, 9, 10, 12, 13, 14

Straightforward recitations of known alternatives: FDM (Crump '433), stereolithography (Hull '330, also the express claim‑3 subject matter and the primary classification family of the '097 itself), stereoscopic/shape‑from‑motion/structured‑light scanning modalities (spec admission + ordinary 3D scanning art), automatic inspection/robotic guidance/pass‑fail/error detection, and audible/visual alerts (routine notification design choices — an alert is an alert).

5. KSR motivation-to-combine ledger

6. Where a challenger could lose (be honest about it)

1. No verified single reference discloses a web server in the printer serving build‑volume imagery. Jung teaches remote authorization/DRM, not remote visualization of the build volume. A challenger must supply a verified reference teaching remote visual status presentation for the 1[e] element; Muniauction supplies the legal rationale but not the factual disclosure.
2. "Status of a print job currently executing" is narrower than generic quality inspection of a finished part. Kritchman '857 is about nozzle status and tray throughput, not in‑process layer reconstruction. This is the claim term most likely to survive.
3. Element 1[b]'s "three-dimensional scanner … capture three-dimensional information" is not met by a 2D camera; the art must actually be 3D‑capable (structured light, stereo, shape‑from‑motion). The spec's admission helps, but an admission about what was known is not itself a § 102 reference.
4. On‑face art is mostly AM fundamentals, not networked machine vision. The examiner allowed over ~66 patent‑art and ~33 NPL items, and the PTAB did not institute IPR2025‑00354 — but per the Director's decision that denial was discretionary/efficiency‑based (a Fintiv/stipulation rationale), not a merits finding, so it carries no § 103 weight. RPX and 3D Printing Industry both frame it as a denial on efficiency grounds, with the Director noting the Sotera stipulation did not cover unpublished system prior art (https://litigation.rpxcorp.com/ptab/18355-…; https://3dprintingindustry.com/news/stratasys-vs-bambu-lab-lawsuit-update-inside-ams-silent-legal-showdown-[243862](/patent/243862)/).
5. Secondary considerations. MakerBot/Replicator commercial success and industry copying could be proffered, but nexus is weak given the crowded field and the fact that the accused products (Bambu Lab A1/P1/X1) embody many non‑claimed features. No objective indicia are in the record I retrieved.

7. Bottom line

• Claims 1 and 4–20 are, on this record, vulnerable to § 103 using a mixed combination: Objet/Kritchman US 7,628,857 (sensing → controller analysis → machine status, external communications) + the applicant's own admission of known 3D scanning and machine‑vision inspection + Jung US 2009/0164379 / US 8,429,754 (networked, credential‑based remote control and monitoring of 3D manufacturing machines) + the web‑implementation rationale of Muniauction, with Gothait/Crump/Hull/Sachs/Menchik supplying the printer base and CAD‑derived "expected" model.
• The weakest element to attack is 1[c]/1[e] (vision‑determined status of the currently executing job, served by an in‑printer web server). The strongest elements to attack are 6–19, because the specification lists their subject matter as known tools.
• Confidence: moderate for the framing and the KSR rationale; low‑to‑moderate that the specific combination above would prevail as actually evidenced, because the two most on‑point on‑face references (Loughran US 2005/0234577 and Gothait US 2006/0111807) could not be read in this session, and their disclosures were characterized to me only indirectly through a related PCT search report.

Sources

Google Patents US8747097 (https://patents.google.com/patent/US8747097/en); Unified Patents portal (https://portal.unifiedpatents.com/patents/patent/8747097); Justia cited-references list (https://patents.justia.com/patent/8747097); US 2009/0164379 A1 (https://patents.google.com/patent/US20090164379A1/en) and US 8,429,754 B2 (https://patentimages.storage.googleapis.com/0f/8f/d8/41a4b2a5c3bda9/US8429754.pdf); Objet US 7,628,857 B2 (https://patentimages.storage.googleapis.com/c5/84/80/2422f81b0f670d/US7628857.pdf; https://uspto.report/patent/grant/[7628857](/patent/7628857)); Objet US 7,225,045 (https://uspto.report/patent/grant/[7225045](/patent/7225045)); WO2013086309 search report (https://patentimages.storage.googleapis.com/5e/ac/4e/de36d5a6bbf9fa/WO2013086309A1.pdf); E.D. Tex. Plaintiff's Opening Claim Construction Brief (https://ptacts.uspto.gov/ptacts/public-informations/petitions/1557098/download-documents); RPX Empower IPR2025-00354 (https://litigation.rpxcorp.com/ptab/18355-shenzhen-tuozhu-technology-v-stratasys-incorporated-ipr-of-097); 3D Printing Industry (https://3dprintingindustry.com/news/stratasys-vs-bambu-lab-lawsuit-update-inside-ams-silent-legal-showdown-243862/).