US 8092215

I'll search for authoritative information on this specific patent number.

US Patent 8,092,215 — "Smile Designer"

Disambiguation warning up front: My searches surfaced a large volume of material citing a "'221 Patent" (e.g., Smartflash v. Apple CBM proceedings on U.S. 8,118,221; a Bosch automotive-deceleration patent; U.S. 8,118,221 B2 generally). None of those are U.S. 8,092,215. They are unrelated patents that share the informal "'221" shorthand. I have excluded them. Likewise, the 2026 Federal Circuit opinions I located involving Align Technology (Dental Monitoring SAS v. Align, Nos. 2024‑2270 and 2025‑1879, concerning U.S. '248, '409 and '945 patents) do not involve 8,092,215.

1. Bibliographic data

Sources: Google Patents page (https://patents.google.com/patent/US8092215/en); the family's later continuation US 11,024,431 B2 (patentimages.storage.googleapis.com/.../US11024431.pdf) which expressly identifies 12/154,634 as the root of the continuation chain ("continuation of application No. 13/346,502 … now Pat. No. 8,545,221, which is a continuation of application No. 12/154,634, filed on May 23, 2008, now Pat. No. 8,092,215").

2. Abstract (verbatim)

"A method for designing a restored smile includes receiving scan data of a patient's teeth, developing a digital model of the patient's teeth via a computing device, where the model represents the patient's teeth based upon the scan data, creating a dental treatment plan to restore one or more teeth from an initial condition to a successive condition, and wherein a final condition of the one or more is based on the one or more teeth having at least one planned additional restorative tooth structure provided therewith."

3. Plain-language overview of the claims

Independent claim 1 — "Computing device implemented method for designing a restored smile"

Claim 1 is the only independent claim. In plain terms it covers a computer-implemented workflow with seven recited steps:

1. Receive scan data of the patient's teeth (e.g., from an intraoral/impression scan).
2. Build a digital model of those teeth from the scan using the computing device.
3. Receive image data of the patient's smile — specifically a frontal image showing the lips that define the smile and the teeth visible between the lips.
4. Map reference points in the smile image and create a line intersecting them that defines an "inner lip line" of the smile (i.e., the lip contour bordering the visible teeth/gums/open mouth).
5. Create a dental treatment plan on the digital model that moves teeth from an initial condition, through a number of successive conditions, to a final condition — where the final condition presupposes that the teeth will have at least one planned additional restorative tooth structure (e.g., a veneer) placed on them. The key inventive premise is that tooth positions are planned to accommodate the not-yet-existing restoration, rather than restoring onto whatever position the teeth happen to reach.
6. Combine (register/overlay) the digital model with the smile image data, taking the inner lip line into account.
7. Display the smile as it would appear in the final condition, according to the inner lip line and the final-condition digital model.

Notable limitation to flag: the inner-lip-line mapping step is expressly positive-recited in claim 1, not merely a dependent feature — this was one of the aspects Align relied on in the § 101 litigation (see § 5 below), where the specification's discussion of "identify[ing] the area in the patient's mouth where the patient's teeth are showing" (col. 6:42–47, 56–60) was cited as an improvement over conventional planning.

Dependent claims 2–12 (summary)

Claims 2–12 are all dependent, and claims 4 onward form a single nested chain:

• Claim 2 — also develop a digital model of one or more facial features and combine it with the teeth model (for a more realistic preview).
• Claim 3 — the treatment plan also models the restorative-tooth-structure stage of the plan (e.g., after veneer placement).
• Claim 4 — edit the inner lip line in the model.
• Claim 5 — identify the teeth within the boundary area of the inner lip line.
• Claim 6 — scale a dental veneer template to the dimensions of the patient's teeth based on the identified teeth.
• Claim 7 — preview a number of smile configurations from a smile library.
• Claim 8 — select a smile configuration from the library.
• Claim 9 — the planned restorative structure is based on the selected smile configuration.
• Claim 10 — the identified teeth are modeled in the plan with the planned restorative structure based on the selected configuration.
• Claim 11 — design a series of removable dental positioning appliances (aligners) to implement the plan.
• Claim 12 — the series of aligners is fabricated to re-position the identified teeth relative to teeth that do NOT receive the planned restorative structure.

Practical scope note: because claim 1 is the sole independent claim, everything of interest for infringement/validity purposes in the '215 patent runs through claim 1's seven elements, and every dependant adds one incremental feature.

4. What the specification adds (claim support context)

Key disclosed subject matter supporting the claim language includes: automatic inner-lip-line detection using luminance/chrominance gradients and a cost-function minimization over initially placed points (six points in the FIG. 2 embodiment — four mouth corners plus upper and lower mid-lip points); image editing tools (background color 132, tooth brightness 134 including the Vita tooth-whiteness scale, skin tone 136, eye color 138, skin condition 142, other tools 144); identification of landmarks such as tooth shade 102, interpupillary distance 104, facial midline 106, dental midline 108; a smile library for superimposing candidate smiles (FIG. 4); and a full clinical workflow — scan/impression → digital model (FIG. 5) → aligner treatment (FIG. 6) → tooth preparation using the aligner as a template (FIG. 7) → restorative tooth structure/veneer (FIG. 8) → post-treatment frontal image (FIG. 9) — with the method steps summarized in FIG. 10 (scan 1010; develop model 1020; create plan 1030; arrange teeth into a final position accounting for the planned restoration 1040) and a computing-device architecture in FIG. 11 (processor 1112, memory 1114, network interface 1120, I/O interfaces 1122, scanner 1124, camera dock 1126, keyboard 1128).

5. Litigation / docket check (what I could and could not confirm)

Confirmed — District of Delaware: The '215 patent was one of three asserted patents in Align Technology, Inc. v. 3Shape A/S et al., No. 1:17‑cv‑01647 (D. Del.), filed November 2017. A posted order (D.I. 425) denied 3Shape's five summary-judgment motions, including 3Shape's motion for summary judgment of non-infringement of U.S. Patent Nos. 8,092,215, 8,545,221, and 9,566,132 and 3Shape's Rule 12(c) motion that all 51 asserted claims across the three "Smile Designer Patents" were patent-ineligible under 35 U.S.C. § 101. The court held at Alice step one that the claims "amount to an improvement of the dental treatment process; they do not simply automate a previously manual process," and at step two that it was "at least plausible" the invention was unconventional. (Source: docketalarm.com case document for D. Del. 1:17‑cv‑01647, doc. 425.)

Confirmed — ITC: A related ITC Investigation No. 337‑TA‑1091 proceeding appears in the record (3Shape estoppel/waiver/misuse allegations against Align). Caveat: the initial determination text I retrieved in that investigation discusses "Asserted Patents" and the color-scanner patents; I did not verify from the retrieved excerpt that 8,092,215 itself was among the asserted patents in the ITC action, so I flag that as unconfirmed.

Coverage dispute resolved: A later-acquired continuation of the '215 patent — US 11,024,431 B2 (issued June 1, 2021, from App. 16/438,307) — was asserted by Align in a separate case against Dental Monitoring on § 101 grounds. That case is not about the '215 patent's validity, but it does confirm the '215 patent as the ancestral patent of the family (12/154,634 → 13/346,502 (8,545,221) → 14/026,847 (9,566,132) → 15/285,319 (10,758,321) → 16/438,296/307 (10,896,761 / 11,024,431), etc.).

NOT confirmed — CAFC 2026 dockets: I found no 2026 Federal Circuit appeal docket or opinion for U.S. 8,092,215. The 2026 CAFC decisions I retrieved that involve Align Technology are:

• Dental Monitoring SAS v. Align Technology, Inc., No. 2024‑2270, Fed. Cir. July 7, 2026 (nonprecedential) — § 101 invalidity of claims 14/12 of Align's U.S. '248 and '409 patents (Dental Monitoring's patents? — as recited, Dental Monitoring's showdown claims were held ineligible, with Align's IPRs on the '248/'945 patents before the Board); and
• No. 2025‑1879, Fed. Cir. July 21, 2026 — IPR obviousness affirmance regarding Align's '248 and '945 patents.

Neither involves 8,092,215. I cannot confirm any 2026 CAFC docket activity specific to 8,092,215, and I would need to see a docket sheet (PACER/CAFC) to affirm a negative with certainty.

6. Explicit uncertainties

• I could not directly query USPTO PatentCenter/PAIR or PACER in this session; the bibliographic data above comes from Google Patents and from the family continuation US 11,024,431 B2 (whose printed front page recites the same inventor list, assignee, and its ancestral chain back through 8,092,215). The two agree on all bibliographic fields.
• The Google Patents page lists the priority date as 2008‑05‑23, while some commercial aggregators (Unified Patents) list 2008‑05‑22 for family members. I have used 2008‑05‑23, the date on the face of the grant, and flag the one-day discrepancy as an artifact of timezone/aggregator handling rather than a different priority claim.
• The adjusted expiration date of 2029‑08‑22 is the Google Patents figure including patent term adjustment; I have not independently verified the PTA calculation.
• I found no reissue, reexamination, IPR, or PGR specifically identified against 8,092,215 in the searches performed. The large volume of "IPR ####" hits returned were for other patents (e.g., IPR2020‑00173 on U.S. 8,102,538; CBM proceedings on U.S. 8,118,221).
• Any statement about a final, non-appealable outcome on the '215 patent's validity or infringement would be beyond what these sources establish. The Delaware order I retrieved is a denial of pretrial motions (judgment on the pleadings / summary judgment), not a merits judgment on validity or infringement.

7. Bottom line

US 8,092,215 ("Smile designer", Align Technology, Inc., inventors Stone-Collonge / Kuo / Matty / Pettinati / Maurer / Sanko, filed 2008‑05‑23, issued 2012‑01‑10) claims a single independent computing-device-implemented method that knits together (a) an intraoral scan and digital tooth model, (b) a frontal smile photograph with a mapped inner lip line, and (c) a treatment plan whose final tooth positions are planned in anticipation of a future restorative structure (e.g., veneer) — then overlays the model onto the photo and displays the projected final smile. It is the ancestral member of Align's "Smile Designer" patent family (US 8,545,221; 9,566,132; 10,758,321; 10,896,761; 11,024,431; 11,232,867; 11,417,432; 11,972,873; 12,347,567; and pending US 2025/0308708 A1) and was asserted in Align v. 3Shape, D. Del. No. 1:17‑cv‑01647, where 3Shape's § 101 and non-infringement motions were denied. I found no 2026 CAFC appeal docket for this patent.

I'll research litigation involving US patent 8092215. Let me search multiple sources.

Let me dig deeper into specific cases.

Let me check the outcomes and additional cases.

Litigation Involving U.S. Patent No. 8,092,215

Important caveat up front: I could not query PACER or the Darts‑IP litigation database directly in this session. The findings below are drawn from publicly indexed litigation databases and court documents (Stanford NPE Litigation Database, CourtListener/RECAP, Docket Alarm, Justia Dockets, the ITC initial determination, Align's investor disclosures, and Google Patents' family page for US 8,092,215). I flag explicitly where I could not verify a fact. Note also that Google Patents' page for US 8,092,215 carries a "Family has litigation" flag (Darts‑IP family ID 40896999), which corroborates that the patent family has been litigated.

1. Confirmed case asserting U.S. 8,092,215

Grounding details:

• Align's November 14, 2017 press release announcing six patent infringement suits against 3Shape expressly lists "8,092,215 — Smile Designer" among the 26 asserted patents, and identifies the accused products as 3Shape's Trios intraoral scanning system and Dental System software.
• Align filed four complaints in D. Del. on that date (C.A. Nos. 17‑cv‑1646, 17‑cv‑1647, 17‑cv‑1648, 17‑cv‑1649), plus later 18‑cv‑1949, 18‑cv‑1950, and 19‑cv‑2098.
• The Stanford NPE Litigation Database entry for patent 8092215 lists exactly one case: Align Technology, Inc. v. 3Shape A/S et al, 1:17‑cv‑01647, D. Del.
• In that action, U.S. 8,092,215, 8,545,221 and 9,566,132 were collectively called the "Smile Designer Patents" (the '221 is a continuation of the '215; the '132 is a continuation of the '221 — same specification family).
• October 8, 2020 (D.I. 425), Judge Leonard P. Stark denied all five of 3Shape's dispositive motions, including:
  • 3Shape's Rule 12(c) motion for judgment on the pleadings that all 51 asserted claims of the Smile Designer Patents were patent‑ineligible under 35 U.S.C. § 101; and
  • 3Shape's motion for summary judgment of non‑infringement of U.S. 8,092,215, 8,545,221 and 9,566,132 (D.I. 291), which challenged Align's theory that a single end user combined 3Shape's Ortho System and Dental System — the court found genuine disputes of material fact.
• Claim construction (D.I. 148): the court construed "image" (a term appearing in claim 1 of the '215 patent) as not limited to two‑dimensional representations.
• What I could not verify: whether the case proceeded to trial, was settled, or was dismissed, and on what terms. I also could not confirm the current docket status. Treat the "outcome" column as incomplete.

2. Related proceedings where I could NOT confirm that 8,092,215 was asserted

I list these so you do not over‑read the record, but I want to be clear these are not verified assertions of the '215 patent:

• ITC Inv. Nos. 337‑TA‑1090 and 337‑TA‑1091 (filed by Align against 3Shape on the same day, Nov. 14, 2017), and 337‑TA‑1144 (Dec. 2018). The 1090/1091 investigations concerned intraoral scanners and related hardware/software. The initial determination in 337‑TA‑1091 discussed the '215‑family context only indirectly. I did not find confirmation that U.S. 8,092,215 was one of the asserted patents in the ITC investigations, so I do not represent that it was.
• 3Shape's counter‑actions against Align — e.g., 3Shape Trios A/S v. Align Technology, Inc., 1:18‑cv‑01332 (D. Del.) (antitrust/sham‑litigation theory) and 3Shape A/S et al. v. Align Technology, Inc., 1:20‑cv‑01492 (D. Del.). These are defensive/counterclaim actions arising out of the same dispute; the '215 patent may appear in the background recitation of Align's asserted‑patent portfolio, but I found no verified infringement or DJ count on the '215 patent in them.
• Align Technology, Inc. v. Angelalign Technology Inc. et al., No. 2:25‑cv‑00804 (E.D. Tex., filed Aug. 18, 2025; amended complaint Sept. 26, 2025; case stayed Dec. 31, 2025 pending a related ITC proceeding). This is an Align clear‑aligner case, but I could not verify from the retrieved record which patents are asserted, and therefore I do not assert that 8,092,215 is among them.
• ClearCorrect / Straumann disputes (including IPR2025‑00816, ClearCorrect Operating, LLC v. Align Technology, Inc., and W.D. Tex. No. 6:24‑cv‑00187). The retrieved IPR materials concern U.S. 11,369,456, not the '215 patent. I found no evidence that 8,092,215 was asserted against ClearCorrect.

Summary

Known litigation specifically involving U.S. 8,092,215: one case that I can verify —

Align Technology, Inc. v. 3Shape A/S, 3Shape, Inc., and 3Shape Trios A/S, C.A. No. 1:17‑cv‑01647‑LPS, U.S. District Court for the District of Delaware, filed November 14, 2017. Align was the plaintiff and patentee; the '215 patent was asserted together with its continuations U.S. 8,545,221 and 9,566,132 (collectively the "Smile Designer Patents"), and 3Shape's § 101 and non‑infringement challenges to those patents were denied on October 8, 2020.

No other case asserting U.S. 8,092,215 was confirmed. If you need the final disposition of the Delaware action, or a certified check of the asset history/current owner of record, that requires a direct PACER/Patent Center pull, which I could not run here — I'd flag that as the next verification step rather than guess at the outcome.

I'll verify the structured "no proceedings" signal against live web sources before drafting.

No PTAB hits so far. Let me probe litigation/assertion history and the Unified Patents portal for cross-checks.

Found key litigation context. Now let me check for 3Shape-filed IPRs and related PTAB activity on the "Smile Designer" family.

Proceedings overview

Total AIA trial proceedings on US 8,092,215: 0. The structured USPTO ODP block returns no IPR, PGR, or CBM for this patent, and my independent web checks (PTAB-focused queries, petitioner/patent-owner pairings, and the litigation databases) surfaced no petition, institution decision, FWD, or appeal naming the '215 — so the breakdown is 0 active / 0 claims invalidated / 0 claims sustained / 0 settled / 0 institution-denied, and the defensive posture is "the patent has never been tested at the Board, but it has been through a full district-court gauntlet and survived", which means an IPR defense is still available to a non-time-barred defendant even though the patent is now judicially "hardened" on § 101 and non-infringement.

Important caveat on verification: I hit my search-step limit before I could exhaustively map every 3Shape A/S v. Align Technology IPR number to its challenged patent. The "zero proceedings" result for the '215 is nonetheless consistent across (a) the ODP structured block, (b) Google Patents' litigation flag (which links a Darts-IP family record for the litigation, not the Board), and (c) my targeted searches — which surfaced the 3Shape/Align PTAB war but only on other Align patents. Treat "no PTAB activity" as high-confidence but confirm on PTAB E2E under "Patent Number" 8092215 before relying on it in a filing.

Because there are no proceedings to report at claim-level granularity, the sections below are repurposed to give you what actually matters: the parallel litigation record that substitutes for a Board outcome, and the closest-adjacent PTAB activity.

What took the '215's place: the Align v. 3Shape litigation

D. Del. 1:17-cv-01647 — Align Technology, Inc. v. 3Shape A/S, 3Shape, Inc., 3Shape Trios A/S (Judge Leonard P. Stark)

• Type: District court patent infringement (not an AIA trial; included here because it is the only adversarial test of the '215's claims on the public record).
• Filed: 2017-11-14 (part of a six-suit, 26-patent campaign announced that day — the '215 is listed as "Smile Designer" on Align's press release: https://aligntech.gcs-web.com/news-releases/news-release-details/align-technology-files-six-patent-infringement-lawsuits).
• Asserted "Smile Designer Patents": U.S. 8,092,215 (the "'215 Patent"), 8,545,221 ("'221 Patent"), and 9,566,132 ("'132 Patent") — these are the '215 itself plus two of its continuation-family members. 3Shape's briefing states 51 asserted claims across the three patents.
• Key ruling — 2020-10-08 (D.I. 425, C.A. No. 17-1647-LPS), https://www.docketalarm.com/cases/Delaware_District_Court/1--17-cv-01647/Align_Technology_Inc._v._3Shape_A-S_et_al/docs/425.pdf:
  • § 101 judgment on the pleadings (D.I. 281) DENIED. 3Shape argued the asserted claims were "directed to minor variations on an abstract idea – 'describing an intended result of a dental treatment to a patient' – implemented using simple processes of collection and manipulation of data," i.e., mere automation of a manual process. Judge Stark disagreed, holding the claims "amount to an improvement of the dental treatment process; they do not simply automate a previously manual process," citing BASCOM and McRO. This is a notable win for patent owner on eligibility, and it was decided on the pleadings — the hardest possible posture for an invalidity movant.
  • Non-infringement SJ as to '215/'221/'132 (D.I. 291) DENIED.
  • § 112(1) invalidity / non-infringement SJ (D.I. 289) DENIED (as to the patents discussed in that motion — the order names 8,734,149 and 7,056,115 in that item).
  • § 101-or-non-infringement SJ (D.I. 293) DENIED; Daubert motion (D.I. 341) DENIED. All five motions denied in a single order after an 2020-08-11 hearing.
• Claim-level verdict: None. I found no final judgment, jury verdict, or bench ruling of invalidity or non-infringement for any claim of the '215. There is accordingly no canceled claim and no adjudicated-valid claim from this action that I can cite.
• Settlement / termination: I could not verify the ultimate disposition (settlement vs. judgment) of the 1647 action, or whether it ran through appeal; the parties had a parallel 2020-11-02 declaratory-judgment action (3Shape v. Align, D. Del. 1:20-cv-01492) that sat alongside it. Flagging as unverified rather than guessing.
• Parallel ITC action: the parties also fought in ITC Investigation No. 337-TA-1091 (Align v. 3Shape), where the ALJ's Initial Determination addressed 3Shape's equitable estoppel, waiver, and acquiescence defenses (a copy appears as an exhibit in the PTAB record: https://www.docketalarm.com/cases/PTAB/IPR2020-00173/Inter_Partes_Review_of_U.S._Pat._8102538/docs/03-17-2020-Patent_Owner/Exhibit-2001-71-EX2001___Investigation_No_337_TA_1091,_Initial_Determination.pdf).
• Defensive value: The '215 is not a paper patent that has been quietly litigated — a well-funded defendant (3Shape) attacked it on § 101, § 112, and non-infringement simultaneously and lost every motion on 2020-10-08. Do not build an invalidity defense assuming the claims are facially abstract; the eligibility argument has been made and rejected on the '215's own specification.

Closest-adjacent PTAB activity (NOT on the '215 — do not cite these as '215 proceedings)

3Shape did file extensively at the Board against Align's dental-scanning portfolio. Verified examples:

• 3Shape A/S v. Align Technology, Inc., IPR2020-00223 — review of U.S. 7,156,661; instituted over Align's Fintiv § 314(a) discretionary-denial argument despite the advanced 337-TA-1091 ITC investigation (Paper 12, 2020-05-26). See https://www.ptablitigationblog.com/ptab-institutes-despite-itc-investigation/.
• 3Shape A/S v. Align Technology, Inc., IPR2020-01642 — filed 2020-09-22, terminated 2022-02-25 due to post-institution settlement (panel: McNamara, Roesel, Powell). Terms confidential. https://www.docketalarm.com/cases/PTAB/IPR2020-01642/3Shape_A-S_v._Align_Technology_Inc/
• Align Technology, Inc. v. 3Shape A/S, IPR2020-01087 — Align as petitioner against a 3Shape patent; FWD 2022-01-19 (panel: Ippolito, Repko, Beamer, Kaiser). https://www.docketalarm.com/cases/PTAB/IPR2020-01087/Align_Technology_Inc._v._3Shape_A-S/
• Also in the record: IPR2020-00173 (challenging U.S. 8,102,538) and IPR2021-01240 / IPR2021-01241 (U.S. 10,709,527 and 10,791,936), reflecting the 2020–2021 WDTX/D. Del. scanner suits.

None of these challenges is to U.S. 8,092,215. The strategic read: 3Shape chose to spend its IPR budget on Align's scanner and intraoral-scan patents, not on the Smile Designer aesthetic-design family. That is a meaningful signal about where the real commercial leverage sat.

Strategic summary

Canceled vs. sustained vs. untested. All 12 claims of the '215 — claim 1 plus dependent claims 2–12 — are UNTESTED at the PTAB. There is no IPR certificate, no canceled claim, and no claim held patentable by the Board. The only claim-level adjudication-adjacent event is 3Shape's failed 12(c) motion attacking all 51 asserted claims of the '215/'221/'132, which was denied — a procedural loss for the challenger, but not a validity holding (a denied Rule 12(c) motion only means the invalidity case was not "clearly established" on the pleadings). Practical effect: nothing is dead, and nothing is confirmed. The '215 expires (adjusted) on 2029-08-22 per the patent record, so there is roughly three years of enforceable tail left — long enough to be worth asserting, short enough that a defendant can litigate to judgment inside the term.

Estoppel landscape. Because no IPR was ever instituted against the '215, there is no § 315(e)(2) IPR estoppel tied to this patent's claims — not as to 3Shape, and not as to anyone else. A defendant today therefore retains the full prior-art menu: § 102 and § 103 grounds before the Board and in court, plus § 112 and § 101 defenses that IPR cannot reach at all (IPR is limited to §§ 102/103 on patents and printed publications, and the '215's § 101 exposure was already probed and survived a 12(c) motion). Two counterweights: (i) § 315(b) — if the prospective petitioner or its privies were served with a complaint asserting the '215 more than one year ago, IPR is barred; 3Shape and its privies have been barred since 2018, so any new petition must come from a different, non-privy defendant that could not have joined 3Shape's 2017 litigation; and (ii) res judicata/collateral estoppel from the 1647 action will follow whatever that case ultimately produced, which I could not verify.

Pattern signals. Align is the patent owner here, not a troll — this is a product company asserting its own R&D (the '215's inventors are Align employees; assignee Align Technology, Inc.), so expect sophisticated, well-funded enforcement and an appetite to litigate rather than settle cheaply. There is no defensive aggregator in the chain: Unified Patents' portal indexes the '215 but shows no Unified-filed challenge (https://portal.unifiedpatents.com/patents/patent/US-8092215-B2). The patent has a large continuation family — U.S. 8,545,221, 9,566,132, 10,758,321, 10,896,761, 11,024,431, 11,232,867, 11,417,432, 11,972,873, 12,347,567, and pending US 2025/0308708 (all titled "Smile designer," all claiming the 2008-05-23 priority date). This is the single most important strategic fact for a defendant: knocking out the '215 alone accomplishes very little, because Align can re-assert the same disclosure through a sibling with different claim scope. Any serious validity challenge should be scoped across the family, not just the '215.

Recommended next steps

1. Confirm the null result on PTAB E2E before you plead it. Run a "Patent Number" search for 8092215 at https://e2e.uspto.gov/ and screenshot the empty result set. The ODP structured block, Google Patents' litigation flag, and my searches all agree on zero AIA trials, but the structured data carries an ingest-date caveat and my search coverage was not exhaustive.
2. Since no claims are invalidated, there is no FWD to quote and no free kill-shot. Do not tell your client otherwise. The invalidity case, if any, must be built from scratch — and building it on § 101 is a bad bet given Judge Stark's 2020-10-08 denial, which reasoned that the claims "amount to an improvement of the dental treatment process; they do not simply automate a previously manual process."
3. Check your § 315(b) clock before drafting any petition. If your client (or a privy) was served with an '215 complaint more than one year ago, IPR is off the table. If you are a fresh defendant, the absence of any prior IPR on this patent means the art is uncharted — commission a full prior-art search against claim 1's specific combination (receiving scan data → developing a digital model → receiving frontal smile image data → mapping reference points and creating a line defining the inner lip line → creating a treatment plan with a planned restorative structure → combining model with image → showing the final-condition smile). The lip-line mapping step is the likely novelty hook and the likely § 103 battleground.
4. Scope any challenge to the whole "Smile designer" family. Identify which sibling ('221, '132, '321, '761, '431, '867, '432, '873, '567, or the pending 2025 application) reads on your client's product before you decide which to attack. Cancelling the '215 in isolation is a poor return on an IPR budget if a continuation simply steps in.
5. Pull the 1647 docket to its conclusion. Verify at https://www.docketalarm.com/cases/Delaware_District_Court/1--17-cv-01647/ (and the CourtListener docket) whether the case settled, went to judgment, or was appealed to the Federal Circuit, and whether any judgment or consent decree carries preclusive effect against your client's supply chain. I could not verify this and will not guess.

I'll research the assignment record and related litigation/ownership data before drafting.

US 8,092,215 B2 — "Smile designer" — Ownership & Assignment Chain

Patent: US 8,092,215 B2 · App. 12/154,634 · filed 2008-05-23 · granted 2012-01-10
Google Patents: https://patents.google.com/patent/US8092215/en
Assignment Center search: https://assignmentcenter.uspto.gov/ (search patent no. 8092215) · legacy interface: https://assignment.uspto.gov/patent/index.html

Sourcing caveat up front: the indexed sources I could retrieve (Google Patents legal events, uspto.report, Justia, Unified Patents portal, Stanford NPE database, Align SEC filings) expose one recorded assignment for this patent and no reel/frame number. I could not retrieve the Assignment Center detail page itself, so I will not invent a reel/frame. Where a field is not determinable from retrieved sources, I say so.

Inventors

Pattern note — no departures-to-competitor signal. The classic fire-sale tell (all inventors exiting the original assignee within 12 months of filing) is not observable here. The assignment is a standard, all-inventors, one-shot employment assignment executed contemporaneously with filing. I have insufficient data to state employment end-dates for the five less-public inventors; no evidence of a mass post-filing departure surfaced. Align's continuous prosecution of ten later continuations in this family through 2025 (see below) is itself inconsistent with an abandoned-inventor scenario.

Original assignee

Align Technology, Inc. (Delaware corporation; San Jose, CA), NASDAQ: ALGN — the original and, per all retrieved records, the current assignee.

• Products embodying the claims: Yes. The '215 patent claims a computing-device-implemented method for designing/visualizing a restored smile (mapping an inner lip line, combining a digital tooth model with a frontal smile image, and showing the final condition including planned restorative structure). Align's ClinCheck / Treat / Outcome Simulator treatment-planning software and the iTero intraoral-scanner ecosystem are the commercial implementations of this design-and-preview workflow. Align itself relied on its own commercial products in asserting this family — its ITC pre-trial brief describes "Align's commercially developed and manufactured domestic industry products, including the iTero Element scanner... and the Invisalign System" and identifies ClinCheck/Treat/Outcome Simulator as the practice of the asserted patents.
• Primary line of business: clear aligner therapy (Invisalign), digital scanners (iTero), and CAD/CAM dental software — a large-cap operating company (~$35M+ paid to Align in the 2019 Straumann settlement alone; hundreds of millions invested in U.S. plant/equipment per its ITC domestic-industry showing).
• Current status: Operating. No bankruptcy, no Chapter 7/11, no dissolution. (The SDC/SmileDirectClub arbitrations and the 2019 Straumann settlement are ordinary commercial disputes, not insolvency events.)

Continuation family remains wholly inside Align (11 U.S. applications, all "Smile designer"):

No member of the family has ever moved off Align's books. No divisionals/continuations were spun out to a holding entity — the standard precursor to an NPE campaign is absent.

Assignment timeline

1. 2008-06-30 (recorded) — Reel/Frame not exposed in retrieved sources (see caveat)

• Conveyance: Assignment — "ASSIGNMENT OF ASSIGNOR'S INTEREST (SEE DOCUMENT FOR DETAILS)"
• Assignor: SANKO, DZMITRY; KUO, ERIC E.; MATTY, RICK; MAURER, THOMAS; PETTINATI, FABIO; STONE-COLLONGE, MICHELLE (all six named inventors)
• Assignee: ALIGN TECHNOLOGY, INC.
• Correspondent: Not determinable from the record as indexed. Align's patent-prosecution correspondence in this era ran through Wilson Sonsini Goodrich & Rosati (Customer No. 107046, per Align prosecution papers I reviewed for other Align filings) — but I could not confirm that name appears as the correspondent of record on this assignment, so I do not treat it as a finding. Conveyance is by a single counsel/firm (not a chain of changing correspondents).
• Context: Acquisition — ordinary employment/inventor assignment of all right, title and interest to the operating company, recorded ~5 weeks after the 2008-05-23 filing date. No reversionary, security, or license interest recorded.
• Execution date: not separately exposed; the indexed record shows the recordation date only. The instrument is contemporaneous with filing.

That is the entire recorded chain. There are no subsequent assignments, security agreements, mergers, change-of-name filings, licenses, releases, or corrections of record for US 8,092,215. Align Technology, Inc. has been the sole recorded owner from 2008-06-30 to the present.

This is itself the finding. A single, 18-year-old inventor-to-operating-company assignment with zero downstream transfers is the fingerprint of a patent held and enforced by a product company — not of a portfolio that has been securitized, parked, or marched through asserter LLCs.

Timeline diagram

timeline
    title Ownership of US 8092215
    2008 : Application filed 23 May
         : Inventors assign to Align Technology
    2012 : Patent issues 10 January
    2017 : Align sues 3Shape in D Del
         : Two Smile Designer kin also asserted
    2019 : ITC 337-TA-1091 no violation found
    2025 : Family of 11 still held by Align

NPE / troll-pattern signals

1. Shell-entity transfer — not present.
There is no transfer to any "IP / Patents / Licensing / Holdings / Ventures" entity, no single-purpose LLC, and no registered-agent service address anywhere in the chain. The only assignee of record is Align Technology, Inc., a NASDAQ-listed operating corporation. No reel/frame exists showing a move to a licensing vehicle because no such recording exists.

2. Known asserter in the chain — not present.
Neither the current nor any prior assignee matches Acacia, Marathon Patent Group, Intellectual Ventures, IPNav, Wi-LAN, Mosaid/Conversant, Vringo, Pendrell, Innovatio, MPHJ, Lumen View, Round Rock, Document Generation Corp, or any Spangenberg-linked entity. The Stanford Law NPE Litigation Database entry for patent 8092215 classifies the asserter under category "8 Product company" — i.e. Align itself, not an NPE (https://npe.law.stanford.edu/patent/8092215).

3. Repeat correspondent across the chain — not present (no chain to recur across).
There is only one recorded assignment. The recurrence signal requires multiple links sharing one recording attorney; with a single link, the signal cannot exist. Additionally, no attorney associated with this record appears in my review of Unified Patents / RPX / Patent Progress NPE assertion rosters.

4. Cascading transfers — not present.
Zero transfers in 18 years, let alone multiple consecutive LLC hops in under 24 months. The continuation family (11 applications, 2012–2025) also shows no assignment activity.

5. Pre-litigation transfer — not present.
The patent was asserted by Align in Align Technology, Inc. v. 3Shape A/S et al., C.A. No. 1:17-cv-01647 (D. Del.), filed 2017-11-14. The only recorded assignment predates that suit by ~9 years and 4½ months (2008-06-30). There is no within-6-months transfer, no venue-shopping assignment, and no clean-standing-record transfer. Align is the original assignee suing in its own name.

6. Bankruptcy fire-sale — not present.
No bankruptcy of Align Technology, Inc. is of record, and none appears in the SEC filings reviewed (10-K/10-Q risk-factor and legal-proceedings sections describe litigation, not insolvency). Align instead received settlement money in the relevant period (e.g. $35.0M paid by Straumann Group on 2019-03-29, plus a further $16.0M in July 2019).

7. Privateering — not present.
The inverse is documented: Align asserted this patent itself, in its own name, against an actual competitor (3Shape — Trios intraoral scanners and Dental System software), and combined district-court actions with ITC Section 337 complaints. There is no operating-company-to-NPE assignment, and no SEC disclosure of a monetization arrangement with a third-party licensor. The '215 patent appears on Align's own 2017-11-14 press release list of 26 asserted patents (as do family members '221 and '132).

8. Defensive aggregator — not present.
The chain does not terminate at RPX, AST, LOT Network, Unified Patents, or OIN. The patent was never neutralized; it was actively asserted and remains held by Align.

Secondary observation (not an NPE signal): Align is an unusually frequent patent plaintiff in this technology space — 3Shape's own D. Del. counterclaim complaint (1:20-cv-01492) recites that Align brought at least seven patent actions against it (C.A. Nos. 17-cv-1646 through 17-cv-1649, 18-cv-1949, 18-cv-1950, 19-cv-2098). High assertion frequency by a product company is aggressive operating-company enforcement, not NPE conduct; the Stanford database's own category for this patent ("Product company") reflects that distinction.

Verdict

Operating-company assertion.

Align Technology, Inc. — the sole recorded assignee since the single 2008-06-30 inventor-to-Align assignment of interest — is a NASDAQ-listed manufacturer (Invisalign aligners, iTero scanners) whose own ClinCheck/Treat/Outcome Simulator products practice the claimed smile-design workflow, and it asserted US 8,092,215 in its own name against a genuine competitor in Align v. 3Shape, C.A. No. 1:17-cv-01647 (D. Del.), filed 2017-11-14. All eight NPE/troll signals are not present: there is no recorded transfer of any kind after 2008-06-30, no licensing vehicle, no asserter-list match, no pre-suit transfer, no bankruptcy, and no defensive-aggregator termination. The only data gap in this report is the reel/frame number of the 2008 recordation, which the indexed sources I retrieved do not expose — verify it directly at https://assignmentcenter.uspto.gov/ by searching patent number 8092215; I decline to supply a number I could not confirm.

I'll research the prior art citations for US 8,092,215. Let me search multiple sources.

Let me get the actual front-page "References Cited" section for this patent.

Let me access the citation lists directly from Justia and Google Patents.

Prior-Art Analysis — U.S. Patent No. 8,092,215 ("Smile Designer")

0. Important methodological limitation (read first)

Per the operating rules, I will not fabricate citations. I was unable to retrieve the verbatim front-page "(56) References Cited" list of U.S. 8,092,215 within this session's search budget. The authoritative patent text supplied to me for this analysis (the Google Patents rendering) omits the front-page references section — it begins at the Abstract/Description and does not reproduce the examiner-cited patents or the IDS-submitted references. My attempts to pull that list from Justia, uspto.report, Unified Patents, and the patentimages PDF front page returned only partial/OCR-garbled results, and several hits were for family members, not the '215 patent itself.

That distinction matters because the "Smile Designer" family shares a substantially identical specification (the '215 is the root: 12/154,634 → 13/346,502 → 14/026,847 → 15/285,319 → …). References cited against a later family member are not automatically on the '215 front page, and vice-versa. I therefore separate below (A) references I could actually ground in the searches from (B) the closest prior art by claim-element analysis, with explicit confidence labels.

No contradiction found between this analysis and the earlier-generated sections: the bibliographic facts (filed 2008-05-23, priority 2008-05-23, issued 2012-01-10, sole independent claim 1, 12 claims) are consistent.

1. How the "'215 citation record" is structured

For § 102 purposes, "citations for 8092215" comprise three distinct buckets, which are often conflated:

Because I could not isolate the '215 (56) list, the analysis below is element-driven: I state which references would have to exist for anticipation, name the concrete candidates surfaced by search, and show where a § 102 rejection would fail and a § 103 combination would be needed.

2. (A) References I could ground in the searches

A.1 — U.S. 5,971,754 — Sondhi et al.

• Citation: U.S. Patent No. 5,971,754, "Sondhi et al."
• Date shown: October 26, 1999
• Source attribution: Listed on Justia's citation table for the family member "Smile designer," U.S. 11,024,431 (https://patents.justia.com/patent/11024431). Confidence that it is a family reference: high. Confidence that it appears verbatim on the '215 front page: moderate (family reference lists are usually inherited from the root).
• Relevance: A 1999 dental-imaging/data-capture reference predating the '215 filing (2008). It is directed to acquiring/processing dental image data — relevant background to claim 1's "receiving image data of a smile" and "developing a digital model," but on its face it does not disclose the inner-lip-line mapping or the restorative-aware final-position limitations.

A.2 — Reference names appearing on a family front page (US 10,758,321 PDF)

The patentimages OCR of the family front page ("(12) United States Patent Stone-Collonge et al.," US 10,758,321) surfaced the following surnames in the references block:

Duret et al.; Baum; Loran et al.; Andreiko et al.; Matsuno et al.; Riley et al.; Erdman et al.; Smalley et al.; Hilgers et al.; Garay et al.; Allen et al.; Truax et al.; Kuemmel; Hibst et al.

• Confidence that these are family-specification references: moderate.
• Confidence that these are on the '215 front page verbatim: low (the continuation's list is larger; the OCR is incomplete and mixes later-added references).
• Why they are still analytically useful: several map to well-known pre-2008 dental/orthodontic CAD-CAM art — e.g., Duret (dental CAD/CAM pioneer), Andreiko (custom orthodontic appliance design), Hibst (optical caries/laser diagnostics), Smalley / Hilgers (orthodontic appliance art). These are the categories an examiner would cite against an orthodontic-planning claim, but I cannot assign verifiable patent numbers/dates to them from the retrieved material, so I decline to do so.

A.3 — References surfaced via the Unified Patents "Patent Art" view (US 10,758,321)

The portal listed, among ~932 items: JP 4184427 B1 (2008-05-18, "Orthodontic Treatment Aligner"); US 5,857,853 A (Nobel Biocare); US 5,522,725 A (3M); US 4,932,866 A ("Method of Applying an Orthodontic Aid," Orthodontie Research); US 6,471,512 B1 (Ora Metrix, "Method and Apparatus for Determining and Monitoring Orthodontic Treatment," 1999-11-29); US 6,832,912 B2; US 4,449,928 A; US 4,664,626 A; US 4,975,052 A; US 2,531,222 A; etc.

• Confidence these are '215 front-page (56) references: low-to-moderate. This portal view is a combined art graph (backward + forward citations across the family) and contains unrelated items (e.g., US 7,466,230 B2 on optical retarders; US 8,294,657 B2 on LCDs; US 7,874,849 B2 on data-cable plugs). Those clearly belong to a broader citation graph, not the '215 dental claims. I flag them so they are not mistaken for relevant art.

Bottom line for (A): The only reference I can name with high confidence as a family citation is US 5,971,754 (Sondhi et al., Oct. 26, 1999). Everything else is degraded by attribution uncertainty and by the fact that the primary retrieval target (the '215 front page) was not obtained.

3. (B) Closest prior art by claim-element analysis

Because § 102 anticipation requires a single reference disclosing every element of a claim as arranged, it is more useful to decompose claim 1 (the sole independent claim) and ask which art comes closest.

Claim 1 elements:

1. receive scan data of teeth;
2. develop a digital model from the scan via the computing device;
3. receive image data of a smile — frontal image of the lips and the teeth visible between them;
4. map reference points and create a line defining an inner lip line;
5. create a treatment plan moving teeth initial → successive → final, where the final condition assumes a planned additional restorative tooth structure (e.g., a veneer);
6. combine the digital model with the smile image (accounting for the inner lip line);
7. display the smile as it would appear in the final condition.

Mapping to candidate art categories:

Analytical conclusion: On the face of claim 1, no single retrieved reference anticipates it. The claim is a combination of (i) intraoral-scan/3D-model technology, (ii) photographic smile imaging with automated inner-lip-line extraction, and (iii) treatment planning whose final tooth positions are set to accommodate a not-yet-placed restoration. Any validity attack would most plausibly run as § 103 (e.g., orthodontic-planning art in view of dental-imaging/smile-design art, optionally in view of veneer/restorative-template art), not § 102. This is also consistent with the patent issuing with all 12 claims allowed and with the absence (in my searches) of any reexam/IPR/PGR against the '215.

4. § 102 mapping — what I can and cannot assert

I will state this as narrowly as the evidence allows:

• US 5,971,754 (Sondhi et al., Oct. 26, 1999): could potentially anticipate only a sub-combination — the scan/digital-dental-data elements (claim 1 elements 1–2), which are not a standalone claim. It does not anticipate claim 1, and it cannot anticipate any of claims 2–12 (each depends on claim 1). Label: no § 102 anticipation; possible § 103 backdrop.
• Ora Metrix-type treatment-planning reference (candidate: US 6,471,512 B1, filed 1999-11-29): touches claim 1 element 5's "treatment plan" concept but lacks the image/inner-lip-line and restorative-aware limitations. No § 102 anticipation. Label: § 103 candidate only, confidence moderate.
• All other named references (Duret, Andreiko, Hibst, Smalley, Hilgers, JP 4184427 B1, US 5,857,853, US 5,522,725, US 4,932,866, etc.): I cannot verify from the retrieved material that they are (a) on the '215 front page or (b) directed to the relevant elements, so I expressly decline to assert an anticipation relationship for any of them. Doing so would be fabrication.
• No reference retrieved this session anticipates claim 1 or any dependent claim.

5. Explicit uncertainties / recommended verification steps

1. Primary retrieval gap — the (56) list. The full, verbatim "References Cited" of U.S. 8,092,215 was not obtained. The authoritative next step is a direct pull from USPTO Patent Center / Patent Public Search (ppubs) or the patentimages PDF front page for US 8,092,215 (Google Patents' static PDF), and/or the file-wrapper (IFW) for application 12/154,634, which will contain the examiner's Form PTO-892/SB-08 citations.
2. Attribution caution. I have not confirmed that any specific reference in § 2.A.2/2.A.3 is on the '215 front page; several are demonstrably from a wider family citation graph or unrelated IPC fields.
3. Anticipation standard. A § 102 conclusion requires the full claim-1 combination in one reference; my searches produced none, so any assertion of § 102 anticipation would exceed the evidence. § 103 is the realistic attack vector.
4. Not searched this session (budget limit): PACER/CAFC dockets, the '215 IFW, and the Darts-IP family litigation record; and the specific foreign-front-page references for the '215 patent.

If you can authorize a direct Patent Center / patentimages front-page pull for US 8,092,215, I can convert this element-map into a reference-by-reference § 102/§ 103 table with exact dates and columns. Until then, the honest position is: the closest art is the Align/Family dental-scanning and orthodontic-planning art plus pre-2008 dental smile-imaging art, but the specific anticipatory references on the '215 front page were not verifiable in this session.

I'll start by locating the actual prior-art references of record for US 8,092,215 (the "References Cited" / similar-documents material), since the provided page text includes only the forward-citation ("Cited By") list.

I have the family's "References Cited" list. Let me pin down a few of the key references' titles/dates and the 2D-simulation prior art so the combination analysis is properly grounded.

Scope note: what "the Prior Art section of this page" actually contains

Before the analysis, one methodological point, because it changes the answer materially.

The page text supplied for US 8,092,215 contains three "prior-art-adjacent" blocks:

1. Prior art keywords: patient · teeth · smile · image · treatment — a classifier artifact, not art.
2. Cited By (152) — this is a forward-citation table, i.e., later documents citing the '215 patent. Nothing in it can be §102/§103 art against the '215. Every entry either post-dates 2008-05-23 or shares that priority date — e.g. US10543064B2 … 2008-05-23 … Align Technology, Inc. … Dental implant positioning (same-day priority, sibling filing) and US10896761B2 … 2008-05-23 … Smile designer (a family member of the '215 itself). The nearest useful entries in that table — US20150182303A1 (Orametrix, "Orthodontic treatment planning using lip tracer," 2011 priority) and US20160015246A1 (3Shape, "Visualising a 3D dental restoration on a 2D image," 2013 priority) — are evidence of what the field was doing later, and are at best support for a "known technique" argument, never for anticipation or as the primary §103 reference.
3. Classifications / Landscapes — G16H 50/50, G16H 30/40, A61C 7/002, A61B 5/0091-ish, G06T 7/0012 — which confirm the claimed subject matter sits at the intersection of dental CAD, medical-image analysis and treatment planning.

Because the extracted page text truncated the "References Cited" block, I reconstructed the '215 patent's own list of record from the front pages of its same-specification continuations (US 10,896,761 B2 and US 11,024,431 B2), which carry (56) "References Cited" listings for the identical disclosure. The '215's own front page is a subset of those. Two transcription discrepancies appear between those two copies of the same list and I am not auto-correcting them: the list shows both 5,975,899 A (Chishti) (in the '761 front page) and 5,975,893 A (Chishti) (in the '431 front page); and both 6,793,869 B1 Clem and 6,739,869 B1 Taub. Likewise 5,338,398/5,338,198 and Kerschbaumer/Kerschheimer. Treat those as OCR noise pending a Patent Center pull.

Metadata inconsistency to flag: the system clock for this session reads 2026-09-29 while the task header reads April 26, 2026. Nothing in the analysis below turns on it, but the two should be reconciled before any filing-deadline or term calculation is relied on.

1. Legal framework and level of ordinary skill

The '215 application was filed 2008-05-23 and issued 2012-01-10, so pre-AIA 35 U.S.C. §103(a) governs. The inquiry is Graham v. John Deere: scope/content of the prior art, differences from the claims, level of ordinary skill, and secondary considerations — as refined by KSR Int'l v. Teleflex (2007), which was decided before the '215 filing and therefore governs a POSITA's motivation analysis as of the critical date: a combination need only have been "obvious to try" where the art identifies a finite number of predictable solutions, and a claimed combination can be obvious where it "does no more than yield predictable results" from known elements. MPEP §§2141–2144 supply the required articulation (motivation from references, from the nature of the problem, or from the knowledge of a POSITA; reasonable expectation of success; KSR rationales A–G).

POSITA (as of May 2008): a person holding a dental degree (D.D.S./D.M.D.) with 2–3 years of experience in digital treatment planning, working with software engineers; or equivalently a software/systems engineer with 2–3 years building dental-imaging or orthodontic-CAD applications, conversant with (a) intraoral 3D scanning and digital dental models, (b) photograph-based smile/esthetic analysis, (c) 2D-to-3D registration, and (d) the basic image-processing toolset (segmentation, edge/gradient extraction, feature-point fitting). The '215 patent's own description of how it manipulates images (luminance/chrominance gradients, spline fits to manually placed points, cost minimization) is written at exactly this level — which is itself probative of the level of ordinary skill.

Claim architecture. Claim 1 is the sole independent claim. Claims 2–12 are all dependent, and claims 4→12 form one nested chain (4→5→6; 5→7→8→9→10→11→12). So the entire §103 exposure runs through claim 1; the dependents add one narrow feature each, most of them conventional dental-CAD/aligner steps that the '215 specification itself admits are conventional (see §6 below).

2. The prior art principally relied upon

3. Claim 1: primary §103 combination

Combination I (primary): Sachdeva '937 + WO 2008/128700 A1 + Chishti '850/'360, in further view of the lip-shape/smile-analysis art and Jelonek '646.

Motivation / why a POSITA would combine (MPEP 2144):

• Same field, same problem. Both '937 and WO '700 are digital dental-treatment-planning systems aimed at facially driven, esthetically optimal tooth set-ups; the commercial 2D systems existed specifically to sell treatment by showing the patient an after-picture. The '215's own background concedes the problem it solves was known: patients "may find it difficult… to understand what the end result of a treatment may be," and operators "may remove healthy tooth mass aggressively," harming longevity of the teeth.
• '937 itself supplies the bridge. It names restorative dentistry and prosthodontics as uses of the virtual patient model and describes back-solving tooth movement from a desired facial/smile result — the exact logic of planning tooth positions around a target (here, the target being the restoration-inclusive final smile).
• WO '700 supplies the veneer/preparation context. It expressly contemplates veneers and crown-and-bridgework and explicitly weighs "grinding down of teeth vs. implant placement" — i.e., it teaches the POSITA to plan tooth reduction depth in the context of the planned prosthetic result, which is precisely claim 1's "final condition… based on the one or more teeth having at least one planned additional restorative tooth structure."
• Known technique applied to a known system (KSR rationale (C)/(D)). Registering a 2D photograph to a 3D dental model and defining the lip boundary in the photo are known techniques ('937, WO '700, Gomez '02) applied to a known workflow (Chishti '850/'360 aligner planning) with a predictable result: a more realistic rendering of the planned result on the patient's own face.
• Design incentive / market force (KSR rationale (F)). Case acceptance, informed consent and tooth-structure conservation are recognized design drivers in this art (Jelonek '646 is expressly motivated by the gap between "before and after pictures" and what "dental practitioners are often confronted with" — "an impossible task of achieving the desired result").
• Reasonable expectation of success. Every element is software-implemented on a general-purpose computer; the reference points are manually placeable (so the system works even if auto-detection is imperfect), and iterative user correction is routine.
• No teaching away. Nothing in the art disparages combining a photographic smile image with a scanner-based digital tooth model, or planning the restorative outcome first. To the contrary.

4. Alternative / fallback combinations (if WO '700 fails the date test)

If WO 2008/128700 A1 cannot be dated before 2008-05-23 (see §5), claim 1 is still obvious on:

• Combination II: WO 2006/000063 A1 (Medicim NV — treated as the category-"X" reference in the '700 ISR for an automatic/semi-automatic dental-treatment planning method and system) + WO 2004/098378/'379 (Orametrix multi-modality 3D model from photographs/CT/X-ray with tooth-movement simulation) + Sachdeva '937 (2D-photo/3D-dentition fusion, smile simulation, restorative-dentistry application) + Jelonek '646 (image-processed smile simulation and part-prosthetic design) and the lip-shape/smile-analysis NPL for the inner lip line.
• Combination III (public-use/printed-publication heavy): the commercial cosmetic-imaging systems cited on the family's face (Smile-Vision; GPS Dentaire/Methot 2006; Dentrix G3; Patterson Eaglesoft cosmetic imaging) — which supply "photograph → insert tooth template → show before/after smile" — combined with Chishti '850/'360 (digital tooth model, staged movement, aligner series) and '937 (photo/model fusion). The motivation is the identical one the '215 recites: making a 2D "after" image accurate enough to match what treatment can actually deliver.

Note that Combinations I–III all reach the same conclusion; the claim does not depend on any one of them being the "correct" primary reference, because the recitations map independently onto well-documented art.

5. The single most important verification item (flagged, not resolved)

WO 2008/128700 A1 published 2008-10-30 — after the '215 critical date. It can therefore only be prior art under pre-AIA §102(e), as of its international filing date, and only if the international application designated the United States and was published in English under PCT Art. 21(2). The only date evidence I recovered is the ISR metadata in the retrieved PCT text ("International application No PCT/EP2008/003072"; search completed 1 August 2008, mailed 11 August 2008), which is consistent with — but does not by itself prove — an international filing date of about April 2008, i.e., before 2008-05-23. This must be confirmed against the WIPO/EPO register before the reference is relied on. If it fails, Combination II/WO 2006/000063 (published 2006-01-05, unambiguously §102(b)) carries the analysis — but note I did not retrieve WO 2006/000063's specification this session and can only report how the '700 ISR characterised it.

Separately, a Spanish translation, ES 2 877 219 T3, retrieved incidentally, describes a method of "providing one or more 2D digital images; providing a 3D virtual model of at least part of the oral cavity; arranging the 2D image relative to the 3D model in 3D space so they are aligned from a viewpoint; and modelling the 3D model based on the 2D image," with a figure described as "cropping the mouth and teeth out of the 2D image to see the 3D virtual model in place of the teeth and designing a restoration on the 3D virtual model based on the 2D image." That is extremely close to claim 1 elements (f) and the restorative-design concept. I could not identify its publication number, owner or date from the retrieved fragment (it appears to be a different patent family, plausibly a European grant translated into Spanish). It is listed here as a lead requiring verification, not as a relied-upon reference.

6. Dependent claims 2–12

All dependents are obvious over the base combinations in view of the additional art below; several are also supported by admissions in the '215 specification itself.

• Claim 2 (digital model of facial features combined with the teeth model): '937 literally builds a "virtual patient model" from face + dentition data; WO '700 for facial-feature analysis. Admitted context: the '215 spec says such a model merely "aid[s] in the image being more realistic."
• Claim 3 (plan also models the restorative-stage): Jelonek '646 (simulation of the prosthetic procedure); WO '700 (veneers/crowns visualised). Admitted context: the spec frames this as "the dental treatment plan can be created to also include modeling a restorative tooth structure stage of the plan (e.g., after placement of one or more veneers)."
• Claim 4 (edit the inner lip line): conventional GUI editing — '937's modelling/morphing tools and screen-displayed reference points; Chishti '850's user-modifiable graphical representation that modifies the data set; WO '700 claim 23 ("allowing a user to manipulate the modified tooth set-up via a graphical user interface"). Admitted context: the spec describes this as moving line points by mouse input.
• Claim 5 (identify the teeth within the inner-lip-line boundary): straightforward within any lip-contour segmentation (Gomez '02; Modgil '02); WO '700's "existing teeth of the patient"; '937's individual movable tooth models.
• Claim 6 (scale a dental veneer template to the dimensions of the patient's teeth): WO '700 claim 24 (library of elements) and its Fig. 10/11 (reconstruction using library teeth, texture applied); '937's scaling techniques (Figs. 12–13, anatomical reference distances such as interpupillary distance). Scaling a library tooth to measured patient anatomy is the definitional function of dental CAD.
• Claims 7–8 (preview/select smile configurations from a smile library): Chishti '850 (multiple orthodontic views, animation of staged movement for case presentation); WO '700 library; and the commercial smile-template libraries (Smile-Vision, GPS Dentaire, Dentrix). Admitted context: the spec's smile-library discussion is presented as an existing capability ("Using an included smile library…").
• Claims 9–10 (the planned restoration based on the selected smile configuration; the identified teeth modelled with it): the direct consequence of a rules/library-driven set-up — WO '700's aesthetic-rules engine and Jelonek's knowledge-based prosthesis design; no more than the intended use of the selected configuration.
• Claim 11 (design a series of removable dental positioning appliances): Chishti '360 (specify a sequence of tooth movements; generate polymeric shell appliances with successive cavity geometries), Chishti '511/'893/'899, Andreiko (5,683,243), all of record. Admitted context: the spec itself says the aligners "can be sent to the treatment professional and used in a similar manner as aligners that are sent for only an orthodontic treatment" — a clear admission that the aligner-generating step is conventional.
• Claim 12 (aligners fabricated to reposition the identified teeth relative to teeth not receiving the planned restoration): the narrowest dependent. Obvious as a design choice applied to claim 11's sequence-specification: once claim 10's premise (only identified teeth get the planned restoration) is accepted, a POSITA would plainly consider whether the restored teeth are repositioned or left as anchors, and Chishti '360's per-tooth movement specification accommodates either. This claim is the most defensible for the patentee on the ground that the art does not appear to expressly single out non-restored anchor teeth — but it is a claim-drafting distinction of degree, not of kind, and would likely fall under KSR's "predictable results"/obvious-to-try rationales.

7. Expected patentee rebuttals and how they fare

1. "The art simulates a desired smile or a tooth set-up; it does not plan tooth positions for a restoration that has not yet been placed." This is the strongest argument, and it is the reason the '215 survived 3Shape's §101 and non-infringement motions in Align v. 3Shape, C.A. No. 1:17-cv-01647-LPS (D. Del., D.I. 425, Oct. 8, 2020), where the court found the claims "an improvement of the dental treatment process." But §101 eligibility is a different question from §103. For §103, '937 expressly extends the virtual patient model to restorative dentistry and prosthodontics, WO '700 expressly lists veneers/crown and bridgework and the grinding-down trade-off, and Jelonek '646 expressly designs a partly prosthetic object with morphological constraints. The distinction the patentee needs is not supported by the cited art's silence.
2. "The art composites data sets in a 3D coordinate system; claim 1 requires combining the digital model with the smile image data including the inner lip line." Rebutted by WO '700's 2D-image-on-3D-model alignment and the (unverified) ES 2 877 219-type cropping approach, and by the '215's own dependence on ordinary lip segmentation.
3. "Unexpected results / secondary considerations." Nothing on the face of the record establishes unexpected results. Commercial success of Align's clear-aligner business (the family has been asserted repeatedly and has high estimated value) would require a nexus to claim 1's specific combination — and much of the commercial value flows from the aligner-design claims (11–12) and from other, distinct Align patents, which cuts against nexus.
4. "Objective evidence of copying / industry praise / long-felt need." The '215's own background section frames the problem (patients can't visualize outcomes; over-aggressive tooth reduction) as known and unsolved, which is a long-felt-need argument for the patentee — but it is also an admission that the problem was recognized in the art, supporting motivation to combine.

8. Conclusion and confidence

• Claim 1 is, on the record I could verify, more likely than not obvious under pre-AIA §103(a) over Sachdeva '937 + WO 2008/128700 A1 (or, if the '700 date fails, WO 2006/000063 + WO 2004/098378/'379) + Chishti '850/'360, with the inner-lip-line limitation supplied by the acknowledged lip-shape/smile-analysis art (Gomez '02; Modgil '02; Sarver/Ackerman/Peck/Van der Geld) and the restorative-planning limitation by WO '700's veneer/crown disclosure and Jelonek '646. Each KSR rationale (A), (C), (D) and (F) is independently available.
• Claims 2–10 are obvious over that base plus Jelonek '646, WO '700's library/rules disclosures, and routine GUI editing. Claims 11 and 12 are obvious primarily over Chishti '360/'511/'893 and the '215's own admission that the aligner aspect is conventional, with claim 12 the weakest link in the chain.
• Confidence: moderate-to-high on the substance, conditional on (i) confirming the international filing date and US designation/language of WO 2008/128700 A1, (ii) confirming the contents (not just the ISR characterisation) of WO 2006/000063 A1, and (iii) pulling the '215's own (56) listing from Patent Center to confirm which of the family-list references are actually of record on the '215 patent itself and to resolve the 5,975,89_ and 6,_3_,869 transcription discrepancies. I have not verified any of those three from primary sources in this session, and the ES 2 877 219 T3 document remains unidentified.