US 6484199

I'll verify the patent details against live sources before summarizing.

US Patent 6,484,199 — Analyst Summary

Scope note: The following is based on the full patent text supplied for US 6,484,199 B2 plus live lookups of the Official Gazette text, Google Patents, FreePatentsOnline, and court dockets. I did not auto-correct any identifier; where sources disagree (notably on the first litigation's court), I report the literal values.

1. Bibliographic data

Sources: OG text at https://webapp1.dlib.indiana.edu/virtual_disk_library/index.cgi/[5628977](/patent/5628977)/FID2/og/html/1264-3/us06484199-20021119.html ; https://patents.google.com/patent/US6484199/en ; https://uspto.report/patent/grant/6484199

Family context (do not conflate with '199): later continuations claiming this family include 10/251,307 (US 6,735,628), 10/828,124 (US 7,469,283), 12/255,615 (abandoned), 13/355,867 (US 8,782,194), 14/327,789 (US 9,779,095), 14/508,665 (US 9,547,650), 14/935,780 (US 9,405,753), 15/407,548 (US 10,318,647). The '199 patent also shares the Friskit family with US 6,389,467 and US 6,519,648.

2. Abstract

Uncertainty flag: I was able to retrieve the patent's specification and "Summary/Definitions" text but not the verbatim abstract field from the sources I accessed. The abstract of record corresponds closely to the opening of the patent's own summary of the invention, which reads (per the supplied authoritative text):

"An embodiment of the invention includes a method for playing back media from network. The method comprises receiving a search criteria from a network enabled device. The method further includes accessing a database comprising a plurality of network addresses, where the database associating each address with one or more classes of information. Each address accesses a media network resource. The method further includes selecting at least one address in the database using the search criteria, signaling the selected address to the network enabled device, and controlling the network enabled device so as to automatically access and play back the media resource of the selected address."

Treat this as a synopsis of the abstract rather than a certified verbatim quotation of the abstract field.

3. Plain-language overview of the independent claims

Coverage caveat: The patent has 61 claims. I confirmed the full verbatim text of claim 1 and the dependent claims 2–17 (FreePatentsOnline), plus the opening of claim 18. I could not retrieve the complete claim set, so I cannot confirm with certainty which of the remaining claims (e.g., in the 30s, 40s, 50s) are independent. The Friskit litigation record references "patent '648 claims 49 and 52" as asserted claims (https://www.courtlistener.com/docket/[4165499/806](https://assignmentcenter.uspto.gov/search/patent/reelFrameDetail?reelFrame=4165499-0806)/friskit-inc-v-realnetworks-inc/authorities/), which suggests additional independent or separately-asserted claims at least at claims 49 and 52 — but I have not read those claims, so I flag that as unverified.

Claim 1 — Method for playing back media from a network:

1. Receive a search request over the network to play back media satisfying one or more search criteria.
2. Select multiple media resources by comparing the search criteria to information associated with those media resources.
3. Establish a "set" of media resources from that selection.
4. Cause media resources, including the set, to be played back on a network-enabled device, with the set's resources played back through the network.
5. Key limitation: when playback of a given media resource terminates, playback of another media resource in the set is automatically initiated.

In plain terms: a server takes a user's search, matches it against a catalog of media, builds a group of matches, and then automatically chains playback from one item to the next — the "continuous playback" core of the invention. Dependent claims 2–17 add: direct access to media at multiple network sites (2); sequential playback using multiple addresses/URLs (3–4); artist-name and musical-category search criteria (5, 7); signaling URLs to a media playback component, and to a web browser component so a network page is displayed while media plays (8–9); user-built play-lists played in a designated order (10); selection from one or more servers (11); identifier-based selection (12); distinct address per resource (13); multi-site playback (14); availability determination (15); and server-to-media-player signaling (16–17).

Claim 18 — Method for playing back media from a network (independent): receives a search request from a network-enabled device to play back media satisfying one or more search criteria, then (per the truncated text retrieved) establishes a set of media resources and causes "one or more media resources in the set of media resources to be at least partially played back sequentially and automatically on the network." Note: the middle operative language of claim 18 was truncated in the source I retrieved; I am not quoting it in full.

Other independent-claim subject matter disclosed as "embodiments" (framed in the specification, not confirmed as claim language): server-side selection/signaling of one or more database addresses tied to classes of information; computer systems (terminal + playback component + database + network server module); a network-enabled device with a user-interface and programmatically controlled playback component; multi-site (first site/second site) continuous playback; play-list module sharing between terminals; back-end web-browser-driven discovery of media links; automatic verification of links; metadata extraction; categorization; rating systems; and play-list generation.

4. Docket / litigation check (including CAFC 2026)

• Google Patents "Family has litigation" metadata literally records a case filed in California Eastern District Court, case 3:03-cv-05085, and links to https://portal.unifiedpatents.com/litigation/California%20Eastern%20District%20Court/case/3%3A03-cv-05085. Note: CourtListener lists the same docket number as Friskit, Inc. v. Realnetworks, Inc., N.D. Cal., 3:03-cv-05085 (https://www.courtlistener.com/docket/[4165499](/patent/4165499)/friskit-inc-v-realnetworks-inc/). I am reporting both literally; I am not reconciling them.
• Friskit, Inc. v. RealNetworks, Inc. and Listen.com (No. C 03-5085 FMS, N.D. Cal.): asserted US 6,389,467, US 6,484,199, and US 6,519,648 (InfoWorld, https://www.infoworld.com/article/[2225983](/patent/2225983)/update-friskit-to-sue-realnetworks-over-patents.html). A Markman/claim-construction order (May 2005) construed, e.g., "media resource," "network server module" (server-side), "search module," and "client module" (https://storage.courtlistener.com/recap/gov.uscourts.cand.15671/gov.uscourts.cand.15671.181.0.pdf).
• Outcome at the district court: summary judgment of invalidity under 35 U.S.C. §103 (obviousness) was granted and the action dismissed (https://www.courtlistener.com/opinion/[1871910](/patent/1871910)/friskit-inc-v-realnetworks-inc/ and https://trellis.law/opinion/district/friskit-inc-v-realnetworks-inc/395133072). The opinion discusses the '628 and '648 patents and prior art such as Winamp, mp3.com, IUMA.com, and JavaScript/Java-applet control of client browsers.
• Federal Circuit: the only CAFC appeal I located is Friskit, Inc. v. RealNetworks, Inc., No. 2007-1583, filed September 21, 2007 (Plaintiff-Appellant: Friskit, Inc.; Defendants-Appellees: Listen.com and RealNetworks, Inc.) — https://dockets.justia.com/docket/circuit-courts/cafc/07-1583. Uncertainty: my searches did not return the disposition of that appeal, so I cannot state the outcome.
• CAFC 2026 dockets: I found no 2026 Federal Circuit docket activity naming US 6,484,199, Friskit, or Friskit Inc. The patent expired (anticipated expiration 2020-05-02; status "Expired – Fee Related"), which is consistent with no pending 2026 appellate activity. If a 2026 docket exists, it did not surface in the searches performed.
• Related but distinct matters (not on '199): Bluebonnet Internet Media Systems v. Pandora (W.D. Tex., 6:20-cv-00731) involving Eyal/Aposporos Friskit-lineage patents, and PTAB IPR2021-00158 (Hulu LLC v. SITO Mobile R&D IP LLC) which cites US 6,389,467. These involve the family, not US 6,484,199 itself.

5. Overall uncertainty statement

• I have verified: patent number, title, inventor, assignee, application number, filing/issue dates, priority chain, claim count, and the verbatim text of claim 1 and dependents 2–17.
• I have not independently verified against the USPTO Patent Center record (only via Official Gazette text, Google Patents, FreePatentsOnline, uspto.report); the fee-status and expiration entries are as listed by Google Patents.
• I could not confirm the verbatim abstract field, the complete claim set, or the identity/scope of every independent claim (unverified candidates include the claim(s) around claims 49 and 52 referenced in the litigation).
• I could not confirm the Federal Circuit outcome in No. 2007-1583, and I found no 2026 CAFC docket entries for this patent number.

I'll search for litigation involving US patent 6484199.

Let me search for additional Friskit litigation and other defendants.

Let me check for any other lawsuits involving this patent or Friskit.

Summary

Based on my searches, only one litigation is documented involving U.S. Patent No. 6,484,199 specifically: Friskit, Inc. v. RealNetworks, Inc. and Listen.com, in the U.S. District Court for the Northern District of California. Friskit asserted the '199 patent (together with several sibling patents) and lost on summary judgment of invalidity, which was affirmed by the Federal Circuit.

Note on identifiers/discrepancies: Google Patents' litigation entry for this patent describes the case as filed in the "California Eastern District Court" with case number 3:03-cv-05085. The authoritative docket records (CourtListener, the district court orders themselves, and the Federal Circuit opinion) show the case was actually in the Northern District of California. I am reporting the case number literally as 3:03-cv-05085 but flagging the jurisdiction discrepancy rather than auto-correcting it.

Case 1 — Friskit, Inc. v. RealNetworks, Inc. and Listen.com

Important nuance regarding the '199 patent in this case

The district court listed the '199 patent among the "five patents constituting those in issue," but when the case was narrowed to eight representative claims, no '199 claim appears in the narrowed set (the eight claims were drawn from the '467, '648, '275, and '628 patents). RealNetworks' own press release described the win as invalidating "the claims of four patents asserted by Friskit." So while the '199 was pleaded as one of the patents-in-suit, the record shows its claims were not among the eight litigated claims at the summary-judgment stage. If exactness matters for a specific purpose, the docket and claim-narrowing orders should be checked to confirm whether '199 claims were dropped or simply not separately asserted. I flag this rather than assume.

Outcome detail

• District court (July 26, 2007): all individual features of Friskit's patents (media players, streaming media, playlists, media-search web sites such as mp3.com and IUMA.com, and programmatic server control via Java/JavaScript) existed in the prior art; "the idea of integrating these different components was not novel."
• Federal Circuit (Jan. 12, 2009): affirmed, holding the claims obvious under KSR, including the "programmatic control"/"direct control of the media player" limitations, and rejecting Friskit's secondary-considerations arguments.

Other potential / related matters (not lawsuits against others on the '199)

• No other infringement suits asserting the '199 patent were found. Friskit's CEO George Aposporos stated publicly in 2003 that the company was "looking at other services" beyond RealNetworks/Listen.com, but no additional suits involving the '199 have surfaced in my searches.
• Related post-2009 activity: The patent is part of a family (including US 6,389,467; 6,519,648; 7,469,283; 8,782,194; 9,405,753; 9,547,650; 9,779,095; 10,318,647). The '467 family member has since been cited as prior art in later proceedings (e.g., references to "U.S. Patent No. 6,389,467 and systems by the original assignee Friskit, Inc." appear in an IPR exhibit in Hulu LLC v. SITO Mobile R&D IP LLC, IPR2021-00158). That is a prior-art citation, not a litigation asserting the '199 patent.
• Legal status of US 6,484,199: Google Patents shows "Expired – Fee Related," with anticipated expiration dated May 2, 2020 (consistent with the '467/priority chain). Claims nevertheless were held invalid in the above case.

Sources consulted

• Google Patents, US6484199B2 (family litigation entry, litigation link to case 3:03-cv-05085): https://patents.google.com/patent/US6484199/en
• CourtListener docket, Friskit, Inc. v. Realnetworks, Inc., 3:03-cv-05085: https://www.courtlistener.com/docket/[4165499](/patent/4165499)/friskit-inc-v-realnetworks-inc/
• CourtListener opinion, Friskit, Inc. v. Real Networks, Inc., 306 F. App'x 610 (Fed. Cir. 2009): https://www.courtlistener.com/opinion/[209377](/patent/209377)/friskit-inc-v-real-networks-inc/
• Federal Circuit opinion PDF (No. 2007-1583): http://cafc.uscourts.gov/sites/default/files/opinions-orders/07-1583.pdf
• District court SJ order (Doc. 806, July 26, 2007), via CourtListener: https://www.courtlistener.com/docket/[4165499/806](https://assignmentcenter.uspto.gov/search/patent/reelFrameDetail?reelFrame=4165499-0806)/friskit-inc-v-realnetworks-inc/
• Markman/claim construction order (May 20, 2005): https://ipmall.info/sites/default/files/hosted_resources/Markman/pdfFiles/2005.05.20_FRISKIT_INC_v._REALNETWORKS.pdf
• RealNetworks press release, "RealNetworks Wins Complete Victory in Patent Suit" (July 31, 2007)
• InfoWorld, "Update: Friskit to sue RealNetworks over patents": https://www.infoworld.com/article/[2225983](/patent/2225983)/update-friskit-to-sue-realnetworks-over-patents.html
• The Register, "Friskit alleges Real Networks is a patent violator" (July 2, 2003): https://www.theregister.com/2003/07/02/friskit_alleges_real_networks/
• Ex Parte / ai-lab case summary for 3:03-cv-05085

Bottom line: There is one known litigation involving US 6,484,199 — Friskit, Inc. v. RealNetworks, Inc. and Listen.com, N.D. Cal. No. 3:03-cv-05085 (filed June 27, 2003) — which ended with the patent(s) held invalid for obviousness (SJ July 26, 2007), affirmed by the Federal Circuit on January 12, 2009.

PTAB / AIA Trial Landscape — US 6,484,199 ("Streaming media search and playback system…", Friskit, Inc.)

Proceedings overview

There are zero AIA trial proceedings on file for US 6,484,199 — 0 active, 0 with claims invalidated, 0 with claims sustained, 0 settled, and 0 institution denials. The structured ODP block is the canonical source and returns no IPR, PGR, or CBM for this patent, and my independent web search surfaced no PTAB trial numbers naming 6,484,199 or the Friskit family. The bottom-line defensive posture is therefore unusual: you cannot rely on a PTAB cancellation, but you also don't have to worry about PTAB estoppel — the real threat to this patent came from the district court, not the Board, and the patent is expired.

Because there are no proceedings, the requested per-proceeding template is empty. Below I instead document the closest analogues — the Article III validity challenges — and the strategic implications, clearly labeled as not PTAB trials.

Important framing caveat. A patent asserted this aggressively (see litigation history below) never drew an AIA petition. That is almost certainly a function of timing, not of strength: the key infringement litigation ran 2003–2009, before IPR/CBM/PGR existed (created by the AIA in 2011–2012), and the asserted claims were already invalidated in district court. The '199 also expired on 2020-05-02 (Google Patents "Anticipated expiration"), after which AIA trials are pointless.

No PTAB proceedings to report

Search of the USPTO ODP dataset, the Google Patents family/litigation panel, and open web sources returned no IPR, PGR, or CBM docket number associated with US 6,484,199. I found no FWD, no institution decision, no termination, and no Federal Circuit appeal of a PTAB decision for this patent. I am not going to invent a proceeding number to fill the template.

• Google Patents record (family litigation panel): https://patents.google.com/patent/US6484199/en
• The only litigation entry the family panel reports is case 3:03-cv-05085, surfaced via the Unified Patents litigation database: https://portal.unifiedpatents.com/litigation/California%20Eastern%20District%20Court/case/3%3A03-cv-05085 — note the district label ("California Eastern District Court") appears to be a mislabel; the CourtListener docket for that case number is Friskit, Inc. v. RealNetworks, Inc., N.D. Cal. No. C 03-5085 FMS. The Unified Patents link reflects that the family was litigated; it is not evidence that Unified Patents (the defensive aggregator) was ever a party or petitioner.

Closest analogue (NOT a PTAB proceeding): Friskit, Inc. v. RealNetworks, Inc.

This is the validity challenge that actually decided the fate of the Friskit claims. I include it because a defendant facing assertion of the '199 today needs it far more than a null PTAB list.

• Type: District-court invalidity (N.D. Cal.), not an AIA trial.
• Filed (case): The docket number is C 03-5085 FMS (2003); the litigation entry is dated to case 3:03-cv-05085.
• Panel / judge: Hon. Fern M. Smith (N.D. Cal.).
• Key procedural milestones:
  • Markman/claim-construction hearing 2005-04-12; tentative order 2005-04-29; Claim Construction Order issued 2005-05-20. See https://storage.courtlistener.com/recap/gov.uscourts.cand.15671/gov.uscourts.cand.15671.181.0.pdf (and the tentative version at .../177.0.pdf).
  • The court construed, inter alia, "programmatic control," "media resource," "network server module," "search module," "set of media resources," and "substantially automatically." Notably it refused to read "streaming media" into "media resource" and construed "substantially automatically" as "largely, but not wholly, without human intervention" (relying on LNP Eng'g Plastics), and denied Real's request to seek reconsideration of that term on 2005-06-07 (Docket 184).
  • Real won summary judgment of invalidity under § 103 (obviousness). The district court's opinion analyzed Winamp, RealJukebox, mp3.com, IUMA.com's "Radio IUMA" (Server-supplied HTML/JavaScript controlling an embedded RealPlayer plug-in), and M3U-file playlist technology as prior art. See the opinion reproduced at https://www.courtlistener.com/opinion/[1871910](/patent/1871910)/friskit-inc-v-realnetworks-inc/.
• Appeal: Federal Circuit No. 2007-1583, nonprecedential disposition affirmed the district court's obviousness judgment. Opinion PDF: http://cafc.uscourts.gov/sites/default/files/opinions-orders/07-1583.pdf. The CAFC held that IUMA Radio taught "programmatic control" and that, "[i]n light of IUMA Radio and the state of the art at the time of the invention, we agree with the district court that a system employing 'programmatic control' and 'direct control' of the media player by the network-based server would have been obvious to one of ordinary skill in the art." (The panel also invoked KSR.) I found the opinion dated to 2009-01-12 via a secondary source; I could not independently confirm that date from the CAFC PDF within my search budget — treat the date as approximate and the docket number 2007-1583 as the reliable identifier.
• Claim-level caution: The recovered opinion text discusses the '467 patent ("programmatic control" limitation) and claims 6 and 16 of the '275 patent ("a media player directly controllable by the search module"). It does not, in the text I retrieved, state a claim-by-claim disposition for 6,484,199 ('648/'199). I therefore cannot and do not assert which specific claims of the '199 were held invalid on summary judgment, beyond that the patents-in-suit were adjudged obvious. Anyone relying on this must pull the district court summary-judgment order and the 07-1583 opinion in full. Do not represent to a court that "claims 1–5 of the '199 were canceled" — that is a PTAB-style outcome this patent never received.

Strategic summary

Canceled vs. sustained vs. untested. From a PTAB perspective, every claim of US 6,484,199 is "untested" — the Board never ruled. From a litigation perspective, the asserted Friskit claims were held obvious at summary judgment and affirmed on appeal (07-1583). But because I could not verify a claim-by-claim invalidity finding for the '199 specifically, the honest position is: the '199's asserted claims were adjudicated invalid in N.D. Cal. as to the defendants before that court, subject to affirmance; the exact claim numbers should be confirmed from the primary order. The patent is now expired (anticipated expiration 2020-05-02 per the Google Patents record), which moots enforcement regardless.

Estoppel landscape. There is no § 315(e)(2) estoppel for anyone, because no IPR/PGR was ever instituted — a defendant is not fenced off from any § 102/§ 103 ground by IPR estoppel. The relevant preclusion theory is instead issue preclusion from the district-court judgment in Friskit v. RealNetworks (as affirmed), but that only binds parties/privies to the 2003–2009 case; a fresh defendant is not in privity and can re-litigate. Practically, the expired status eliminates the need for a validity defense at all.

Pattern signals. (1) No repeat petitioner — there was no petitioner, so no serial-IPR pattern to exploit. (2) The patent owner did appeal a loss, but to the Federal Circuit from a district court, not from a PTAB FWD — so there is no "aggressive PTAB appellant" signal, only a litigant that pressed an appeal and lost. (3) No defensive aggregator appears in the chain for the '199; the Unified Patents link in the family panel is a litigation-database artifact, not evidence Unified was a party. (4) The family shows a long continuation chain (US 6,735,628; US 7,469,283; US 8,782,194; US 9,779,095; US 9,547,650; US 9,405,753; US 10,318,647), so the more relevant assertion risk to today's defendant may live in later, longer-lived continuations, not the '199.

Recommended next steps

• If you are a defendant and a demand letter or complaint cites US 6,484,199: the strongest response is not a PTAB angle but the combination of (a) expiration (anticipated 2020-05-02; status "Expired - Fee Related") and (b) the adjudged invalidity of the asserted Friskit claims in Friskit v. RealNetworks, affirmed at Fed. Cir. 2007-1583. Pull and attach the primary sources before you quote them: the 07-1583 opinion (http://cafc.uscourts.gov/sites/default/files/opinions-orders/07-1583.pdf) and the district court summary-judgment/claim-construction orders (https://storage.courtlistener.com/recap/gov.uscourts.cand.15671/). Do not characterize the outcome using PTAB vocabulary ("claims canceled") — no PTAB cancellation exists.
• If you are an IPR petitioner-in-waiting: there is no proceeding to join and no statutory bar to attack, but there is also no live patent worth attacking at the '199 — it is expired, so a petition would be an academic exercise. Redirect any validity budget to the live continuation members of the family (e.g., US 10,318,647, US 9,779,095) that have later expirations.
• If active proceedings were pending, the standard AIA clocks would be: institution decision within 6 months of a complete petition (§ 314(b)); trial completion and FWD within 12 months of institution (§ 316(a)(11)); and CAFC appeal under § 319. None of those clocks are running here — there is nothing pending.
• Bottom line: no PTAB activity exists on this patent, and none ever did. That absence is explained by timing (litigation predated the AIA) and by the patent's age, not by the patent having "survived" PTAB scrutiny. The patent's real weakness was adjudicated in district court and affirmed on appeal, and it has since expired.

Sourcing note / honesty flag: I did not locate a PTAB E2E or CourtListener record of any AIA trial for this patent, consistent with the ODP block. I could not independently verify (a) the exact Federal Circuit disposition date, or (b) which specific claim numbers of the '199 the district court invalidated. Those two items should be confirmed against primary documents before being relied upon in any filing.

I'll research the assignment record for US 6484199 across the sources you specified.

Strong leads. Let me dig into the assignment records and the later enforcement entity.

Key reel/frame references surfaced. Let me pin down the full chain, including the intermediate Aposporos and Bluebonnet assignments.

Assignment & Ownership Analysis — US 6,484,199 B2

Patent: US 6,484,199 B2 — "Streaming media search and playback system for continuous playback of media resources through a network"
App. No.: 10/104,792 · Filed: 2002-03-22 (continuation of 09/563,250) · Issued: 2002-11-19
Priority: Provisional 60/177,786, filed 2000-01-24
Assignee of record on the face of the patent: Friskit, Inc., San Francisco, CA

Data-quality note up front. The authoritative text I was given (Google Patents legal-events block) shows only two recorded post-filing assignments for the '199 — both dated/recorded 2003-12-24 — and lists the current assignee as Friskit, Inc. Additional chained transfers exist in this patent family (documented in litigation), but I was not able to retrieve the reel/frame numbers for the two '199 entries themselves, nor correspondent-of-record data, before my tooling budget was exhausted. Where I rely on family-level records I say so explicitly. I do not assert any reel/frame I could not see.

Inventors

Unusual-pattern check — no "inventors leave within 12 months" fire-sale tell. The two inventors are the founders and both remained tied to Friskit into 2003 (Aposporos signed the 2003-12-24 security agreement as an insider; he was still CEO at the time of the RealNetworks suit). The unusual pattern here is the opposite one: an inventor/founder resurfacing years later as the corporate representative of the entity suing over the same family (W.D. Tex. 6:20-cv-00731; see NPE §1).

Original assignee

Friskit, Inc. — San Francisco, California. Privately held.

• Primary line of business: a consumer streaming-media search/playlist "personal radio" service (search an artist, auto-play streaming results continuously). Beta launched in 2000; the founders stated more than 100,000 beta users, and the service was removed in early 2001 because the founders "foresaw the music industry opposition" to streaming music.
• Did it ship a product embodying the claims? Effectively no. Friskit's own litigation position (Bluebonnet's operative complaint, ¶21) is that "Bluebonnet's predecessor, Friskit, never made, offered for sale, or sold any 'patented article' within the meaning of 35 U.S.C. § 287 after the issuance" of the family parent. The company itself said it "has been unable to find any customers for its technology."
• Status: Defunct. After 2001 Friskit "changed its business strategy from a consumer service to a technology licensing model" and functioned as a technology-licensing / patent-assertion shop. It sued RealNetworks and Listen.com in 2003; lost on obviousness in N.D. Cal. (Friskit v. RealNetworks, 2007); settled confidentially with Microsoft in 2011. No Chapter 7/11 bankruptcy proceeding surfaced in my research.

Assignment timeline

Two records are (a) confirmed on the face of the '199 legal-events data; the third entry is a (b) family-level record I include because it completes the ownership story.

(a) Records confirmed on US 6,484,199

2003-12-24 (executed) / recorded 2003-12-24 — Reel/frame not retrievable from sources accessed

• Conveyance: Assignment ("Assignment of Assignors' Interest")
• Assignor: George Aposporos; Aviv Eyal
• Assignee: Friskit, Inc.
• Correspondent: not retrievable
• Context: internal/confirmatory — the two founders formally assign their inventor interest in the '199 to their own company. Timed ~6 months after Friskit filed the RealNetworks/Listen.com suit (June 2003), i.e., litigation-driven chain-of-title housekeeping.

2003-12-24 (executed) / recorded 2003-12-24 — Reel/frame not retrievable from sources accessed

• Conveyance: Security Agreement
• Assignor: Friskit, Inc.
• Assignee: George Aposporos (individually — the CEO/co-founder)
• Correspondent: not retrievable
• Context: securitization/distress — Friskit pledges the patent as collateral to its own CEO. Two conveyances on the identical date, opposite directions (founders→company assignment; company→CEO security interest), is a classic late-stage capital-structure maneuver.

(b) Family-level records (same priority family; asserted patents '753 / '650 / '095)

In Bluebonnet Internet Media Services, LLC v. Pandora Media, LLC, Bluebonnet pleaded its chain of title directly:

"Bluebonnet is entitled to sue to collect damages for all past infringement of the Asserted Patents, as shown by the documents recorded at the USPTO at Reel 041675, Frame 0788 et seq., and Reel 041217, Frame 0628 et seq." (Complaint ¶18)

• Reel 041675/0788 et seq. — conveyance completing Bluebonnet's chain of title (execution/recording dates not retrieved; Google Patents shows the family's continuation patents transitioning to George Aposporos (individually) on 2016-08-02, 2017-01-03 and 2017-10-03, and to Bluebonnet Internet Media Services, LLC on the later '647 issuance).
• Reel 041217/0628 et seq. — second link of the same chain (same caveat).
• Correspondent: not retrievable for either reel.
• Context: transfer-to-asserter — Friskit (defunct) → George Aposporos (the inventor/former CEO, individually) → Bluebonnet Internet Media Services, LLC, a Lubbock, Texas entity with no products.

⚠️ Critical caveat: these two reels were cited as the title records for the '753/'650/'095 patents, not the '199. The '199 legal-events data I was given still names Friskit, Inc. as current assignee. I therefore cannot confirm the '199 itself was conveyed to Aposporos/Bluebonnet — treat the family link as strong circumstantial context, not a confirmed '199 record.

Assignment Center status: records do exist for this patent (the two 2003-12-24 entries), so I have not stopped at the first section. Verification: https://assignmentcenter.uspto.gov/ (search patent 6484199) and the Google Patents legal-events page https://patents.google.com/patent/US6484199/en.

Timeline diagram

timeline
    title Ownership and Enforcement of US 6484199
    1999 : Friskit founded by Eyal and Aposporos
    2000 : Priority application filed
    2001 : Friskit shuts down consumer service
    2002 : Patent 6484199 issued to Friskit
    2003 : Founders assign rights to Friskit
         : Friskit grants security interest to Aposporos
         : Friskit sues RealNetworks and Listen
    2007 : Friskit family patents held invalid
    2011 : Friskit settles with Microsoft
    2016 : Family patents assigned to Aposporos
    2017 : Family patents assigned to Aposporos
    2019 : Bluebonnet family patent issued
    2020 : Bluebonnet sues Pandora in Waco
    2022 : Bluebonnet family patents invalidated
    2024 : Federal Circuit affirms invalidity

NPE / troll-pattern signals

1. Shell-entity transfer — present at family level; unclear for the '199. Bluebonnet Internet Media Services, LLC is a Texas LLC with "little-to-no online presence," described in court filings and press as a non-practicing entity, and its registered office was reported to share an address with its litigation counsel. But for this patent the confirmable record stops at the two 2003-12-24 entries, and the '199 is still shown as owned by Friskit, Inc. → unclear on the '199 itself.

2. Known asserter in the chain — not present. No chain entity (Friskit; George Aposporos; Bluebonnet) matches the named public NPE lists (Acacia, Marathon, IV, IPNav, Wi-LAN/Mosaid/Conversant, Vringo, Pendrell, Round Rock, etc.). Note, however, that Bluebonnet was independently adjudicated a non-practicing entity in substance (see below).

3. Repeat correspondent across the chain — unclear / no data. I could not retrieve correspondent-of-record for either 2003-12-24 entry or for Reel 041675/0788 and Reel 041217/0628. This is the single most valuable tell you asked for and it is the one I could not capture — recommend a direct pull from Assignment Center.

4. Cascading transfers (<24 months through chained LLCs) — not present. The family transfers trace roughly 2016 → 2017, i.e. ~13+ years after the 2002-'03 events, and the '199's own two records are same-date (2003-12-24) and not chained through intermediary shells.

5. Pre-litigation transfer (within 6 months of first suit) — not present. The Bluebonnet/Pandora suit was filed 2020-08-12; the family assignments to Aposporos/Bluebonnet long predate it. The '199's own 2003 assignments coincide with the RealNetworks era, not a later assertion of the '199.

6. Bankruptcy fire-sale — not present / unclear. No Chapter 7/11 proceeding for Friskit surfaced; it "ceased operating" rather than demonstrably liquidating in bankruptcy. The 2003-12-24 security agreement to CEO Aposporos is the only distress artifact.

7. Privateering — not present. No operating-company-to-NPE hand-off to assert against the operating company's competitors; Friskit was itself the original asserter (RealNetworks/Listen.com, then Microsoft).

8. Defensive aggregator — not present. The chain does not terminate at RPX / AST / LOT / Unified / OIN. The family's assertion record is the opposite: Bluebonnet pushed 6:20-cv-00731 in the W.D. Tex. (Waco) and appealed after losing, and the Federal Circuit affirmed invalidity on 2024-03-29.

Verdict

NPE — moderate confidence.

The chain that is confirmed on this patent (the two 2003-12-24 records) is between a founder-owned company and its own CEO, but the original assignee Friskit was already a non-practicing, never-commercialized licensing entity — its own litigation admits it never made, offered for sale, or sold any patented article after issuance (Bluebonnet complaint ¶21), and it won no validity contest (patents held invalid as obvious in N.D. Cal. 2007). The strongest signal — the family's terminal transfer to Bluebonnet Internet Media Services, LLC, a Texas NPE whose corporate representative is inventor/former-CEO George Aposporos — is documented at Reel 041675/0788 and Reel 041217/0628 but is pleaded for the '753/'650/'095 patents, not for the '199, which is still recorded to Friskit. Confirming (i) whether the '199 was included in those two reels and (ii) the correspondent of record on each would move this to NPE — high confidence; I did not have retrievable reel/frame or correspondent data for the '199 entries themselves, so I stop at moderate.

Verify at: https://assignmentcenter.uspto.gov/ (patent 6484199) · legal events: https://patents.google.com/patent/US6484199/en

I'll research the prior art citations for US 6,484,199. Let me search for the reference information.

Let me search more specifically for the citation list of this patent.

Let me look at the specific citation lists on the patent's own pages.

Scope, sourcing, and an important caveat

I was asked to pull the examiner-cited "References Cited" list from the face of US 6,484,199 and analyze each reference under 35 U.S.C. § 102. Before giving the analysis, I have to flag a verification gap honestly:

• The full patent text supplied to me (from the Google Patents copy at https://patents.google.com/patent/US6484199/en) does not include the "References Cited" / front-page citation block. It begins at the Title/Abstract and jumps to the description and drawings; the bibliographic citation tables are absent.
• My database searches did not return a reliable, complete, 6484199-specific examiner citation list. Several hits returned citation tables belonging to other patents (e.g., the Google Patents page for US 6,643,621 showed a "Patent Citations (13)" table that included US 6,484,199B2 as one row), and I could not confirm those 13 rows are the prior art cited on 6,484,199 rather than by a sibling patent. I hit my search-step limit before I could open the USPTO PatentCenter/Global Dossier record directly.
• Per your rule, I will not fabricate patent numbers or dates to fill that gap. Below I separate (A) what I could actually ground, from (B) the prior art that was actually litigated against this patent family, which is well documented and is the materially most relevant art.

Identifiers are reproduced literally as found; I have not auto-corrected anything.

A. References I could surface (attribution to 6,484,199 NOT fully verified)

A search returned a citation table whose rows thematically match a streaming-audio search/playback patent and whose last row is US6484199B2 (en) | 2000-01-24 | 2002-11-19 | Friskit Inc. | Streaming media search and playback system.... I could not confirm this is the 6,484,199 front-page list, so treat the set below as candidate art (dates as reported by the source):

Source for the table above (context URL): https://patents.google.com/patent/US6643621#10 (the page that surfaced the list; not the 6,484,199 page).

The reference that stands out as potential § 102 art from this set is US 6,502,194 B1 (Synetix, "System for playback of network audio material on demand", priority 1999-04-16) — a network-audio-on-demand playback system is squarely in the field of claims 1, 8, 16/18 of 6,484,199 (signaling addresses of media resources to a client for automatic playback). US 6,240,459 (CDDB) is relevant to the metadata/playback-synchronization limitations, and US 6,240,448 (Rutgers) to "audio access to information over a wide-area network." I am not able to confirm from the retrieved sources which of these the examiner actually applied, or under § 102 vs. § 103.

B. The prior art actually litigated against 6,484,199 (the materially most relevant art)

US 6,484,199 (the "'648 Patent", Friskit, Inc.; continuation of US 6,389,467 "the '467 Patent"; sibling US 6,735,628 "the '628 Patent") was held invalid as obvious under 35 U.S.C. § 103 in Friskit, Inc. v. RealNetworks, Inc. (N.D. Cal., 2007), affirmed by the Federal Circuit, No. 2007-1583 (2008). The court found every individual feature existed in the prior art and that combining them was predictable under KSR.

Grounded references (all from the court/opinion records):

1. Winamp (Nullsoft media player) — a digital-audio media player with a playlist that played songs continuously and in order, including streaming media, and an integrated "minibrowser" for web search. Court record: Loomis Decl. Ex. 2 (winamp-iuma-…avi); http://online.wsj.com/public/resources/documents/friskit.pdf and https://storage.courtlistener.com/harvard_pdf/[1871910](/patent/1871910).pdf. → Directly relevant to claims reciting sequential/continuous automatic playback from a playlist and to the "media player controls playback" limitations.

2. RealPlayer / RealJukebox (RealNetworks) — media players integrated with web browsing; "the RealPlayer 4.0 plug-in software came bundled with Internet Explorer 4.0 and could be controlled from web pages through Java and other technologies." A published API (from Oct. 1995) allowed third parties to "embed instructions" in the stream. → Relevant to the programmatic-control and web-integration limitations (claims reciting a network server module programmatically controlling the media playback component and the web-browser display limitation).

3. mp3.com — a music directory/site where users searched for music, constructed a playlist, and sent it to a media player for streaming playback. Court record: Zellweger Expert Test. 100:6; Friskit's own MSJ chart. → Relevant to "selecting a plurality of media resources using search criteria," "establishing a set of media resources," and signaling addresses to a playback component.

4. IUMA.com / "Radio IUMA" — server sent JavaScript + HTML to the user's browser that opened a window and controlled an embedded RealPlayer plug-in — the court's key example of "programmatic control" and "direct control" of a media player by a network server. Court record: Patterson Decl. ¶¶19–21; Fed. Cir. op. at 9–10. → Relevant to the core programmatic-control limitations that Friskit argued were the inventive step.

5. Java applets, JavaScript, ActiveX — established mechanisms enabling "websites and their corresponding servers to send programmatic instructions to the user's computer to be executed by the client web browser." → Relevant to the network-server-module-control claims.

6. M3U playlist files — the prior art "generally relied on downloaded M3U files to point the media player to the location of the individual media file or stream that was intended for playback." Source: http://cafc.uscourts.gov/sites/default/files/opinions-orders/07-1583.pdf. → Relevant to the "play-list of network addresses" claims (e.g., claim 10).

The court's § 103 conclusion is the operative finding for this patent — the references were combined, not applied singly, so most claims fail under § 103 rather than being strictly anticipated under § 102.

C. Claim-level mapping (35 U.S.C. § 102 / § 103)

Because the supplied text lacks the full claims, mapping uses the claim language that is visible (Google Patents / FreePatentsOnline, https://www.freepatentsonline.com/6484199.html) plus the claim numbers identified in the litigation record (the '648 Patent's claims 37, 49, 52 were addressed by the court).

D. Bottom line

• Statutory basis actually established for this patent: 35 U.S.C. § 103 obviousness (Fed. Cir. 2008, No. 2007-1583). No reference I found anticipates all claim limitations on its face, so pure § 102 anticipation of the independent claims is not what was established; the strongest single-reference § 102 candidates are US 6,502,194 (Synetix) for the on-demand network-audio core and M3U/Winamp art for the ordered-playlist and sequential-playback claims.
• The most relevant prior art is Winamp, RealPlayer/RealJukebox, mp3.com, and IUMA.com "Radio IUMA" (plus Java/JavaScript/ActiveX and M3U files) — these were the references that invalidated the family.
• What I could not verify and am not asserting: the precise examiner-cited "References Cited" list printed on the face of US 6,484,199. The 12 documents in the table in Section A came from a search-surfaced citation record whose attribution to 6,484,199 I could not confirm. If you can supply the front-page PTO-892/PTO-1449 or let me open the USPTO PatentCenter record directly, I will re-run the § 102 analysis reference-by-reference against the actual claim text.

Primary sources used: https://patents.google.com/patent/US6484199/en ; http://online.wsj.com/public/resources/documents/friskit.pdf ; https://storage.courtlistener.com/harvard_pdf/1871910.pdf ; http://cafc.uscourts.gov/sites/default/files/opinions-orders/07-1583.pdf ; https://www.freepatentsonline.com/6484199.html

I'll ground the obviousness analysis in the prior art actually raised in the litigation and the references cited on the face of the patent. Let me pull those.

Let me pull the references cited on the face of the patent and check a couple of the classic streaming/playlist prior-art patents.

Let me try to capture the actual "References Cited" list on the patent's face.

Obviousness Analysis — US 6,484,199 B2 under 35 U.S.C. § 103

Scope note / instruction compliance. The task asked me to "use the results from the Prior Art section of this page." The page as furnished to me does not contain a discrete, labeled prior-art table; what it does contain is (a) the full patent text of '199, (b) the family/related-art citations appearing on the face of the continuation patents, and (c) the prior-art record that was actually developed and adjudicated in Friskit, Inc. v. RealNetworks, Inc. I have therefore built this analysis on the prior art that is grounded in the record — the references cited on the face of the '199 family (Logan, Lang, and the Winamp/mp3.com/IUMA system art) and the system prior art the district court and Federal Circuit actually relied on (Winamp, mp3.com, IUMA.com, IUMA Radio, the M3U format, RealPlayer/RealJukebox, and Java/JavaScript/ActiveX). Where I am extrapolating from the sibling patents because the record speaks to a different patent in the family, I say so explicitly.

I also flag, per the cross-reference rule, the one important inconsistency with the previously-generated sections (see §7, Contradiction flag): the '199 patent's own claims were never among the narrowed set of claims actually adjudicated in the Friskit litigation. The obviousness record below is therefore strongest as to the claims of the sibling patents ('467, '648, '275, '628); applying it to '199 claim 1 and its dependents is an analytically straightforward extension because all members share the "same specification," but it is an extension.

1. The legal framework applied

The controlling test is Graham v. John Deere Co., 383 U.S. 1 (1966) (scope and content of prior art; differences between prior art and the claims; level of ordinary skill; secondary considerations), as refined by KSR Int'l Co. v. Teleflex Inc., 550 U.S. 398 (2007). The '199 priority date is January 24, 2000 (provisional 60/177,786). No review here reaches the § 102 anticipation question, because § 103 disposes of the analysis on the record below.

Three KSR principles drive the result:

1. "The combination of familiar elements according to known methods is likely to be obvious when it does no more than yield predictable results." 550 U.S. at 416.
2. "A person of ordinary skill in the art will have reason to pursue" a finite number of identified, predictable solutions. Id. at 421 (cited by the district court as "KSR, 127 S. Ct. at 1742").
3. "Predictable use of prior art elements according to their established functions" is within the grasp of the ordinary artisan. Id. at 417 (quoted at Fed. Cir. slip op. at 9, http://cafc.uscourts.gov/sites/default/files/opinions-orders/07-1583.pdf).

Level of ordinary skill (POSITA). The artisan here is a software/network engineer (or small team) as of ~1999–2000, familiar with (i) HTML/HTTP web authoring and server-side CGI, (ii) Java, JavaScript, and ActiveX, (iii) streaming-media players and the M3U playlist format, (iv) search engines and HTML parsing, and (v) client/server architecture. This is "a predictable field of art" — a point the district court made expressly: Friskit is a software case in which KSR "provides reinforcement to one's ability to attack broad claims" (district court opinion, https://storage.courtlistener.com/harvard_pdf/[1871910](/patent/1871910).pdf).

2. Scope and content of the prior art

2.1 Patent references on the face of the '199 family

2.2 System / printed-publication prior art (the arithmetic of the Federal Circuit record)

Per the Federal Circuit opinion (Friskit, Inc. v. Real Networks, Inc., 306 F. App'x 610 (Fed. Cir. 2009), https://www.courtlistener.com/opinion/[209377](/patent/209377)/friskit-inc-v-real-networks-inc/), the prior art comprised:

• Winamp — a media player with an integrated minibrowser giving "a single interface with which to navigate to sites such as mp3.com or IUMA.com, create a playlist of desired music files, download the music files, and play them back in their designated order."
• mp3.com and IUMA.com — websites "offered users the ability to search online databases of music and download any of the search results"; clicking a result in a browser "would download the music and create a playlist."
• IUMA Radio — an automatic streaming radio: "[o]nce the user had selected a genre, the local browser window would automatically retrieve more songs and control the media player to play them back." Crucially, "[t]he server module transmitted a program consisting of Javascript and HTML code, which caused a local browser window to open and controlled the embedded media player" — i.e., express programmatic server-side control.
• The M3U playlist format — "When a user clicked on a link to an M3U file … the M3U file would be downloaded … [and] the music files located at the network addresses specified by the M3U files would then be automatically played back in the predetermined sequence."
• RealPlayer 4.0 / RealJukebox, including the RealPlayer 4.0 plug-in bundled with Internet Explorer 4.0 that "could be controlled from web pages through Java and other technologies."
• Java, JavaScript, and ActiveX in "widespread use" well before the priority date; and Real's October 1995 API announcement inviting content providers to "plug their own interface" into the media player, "embed instructions" into the stream, and let users "browse, select and play back audio … on demand, in real time."

The Federal Circuit's finding that server-side "programmatic control" and "direct control" were known is squarely on point:

"Facilitating 'programmatic' and 'direct' control of the media player by networked software modules was the intended purpose of exposing the application programming interface." (slip op. at 10–11)

3. Claim-by-claim mapping and combinations

3.1 Claim 1 (the anchor independent claim)

Claim 1's elements (per the previously-generated summary of the verbatim text) are: (1) receiving a search request to play media satisfying criteria; (2) selecting multiple media resources by comparing the criteria to associated information; (3) establishing a set; (4) causing playback of the set through the network; and (5) upon termination of one resource, automatically initiating playback of another resource in the set.

Primary combination: Winamp + mp3.com/IUMA.com + IUMA Radio (and M3U).

This combination requires no element not already present; every element was performing its established function (search → playlist → play). That is the paradigm KSR case.

Alternative / reinforcing primary combination: Logan ('827 / '076) + Lang + Winamp.

• Claim 1's "select multiple media resources by comparing … criteria to information associated with them" reads on Logan's server-compiled personalized catalog (program/topic descriptions matched to subscriber preferences) and on Lang's profile-based database search.
• Claim 1's ordered "set" and automatic next-item playback read on Logan's session schedule ("an ordered sequence of program segments … created … by a server subsystem"). That the media was downloaded rather than streamed in Logan is immaterial because streaming was independently known (IUMA Radio) and the substitution is a predictable use of a known delivery mode.
• Claim 1's server-driven selection reads on Logan's server-side schedule compilation — directly supplying what Friskit called the "fundamentally new feature" (server control), which the Federal Circuit rejected as novel.

Motivation to combine (claim 1). (a) Same field of endeavor — network distribution of digital media; (b) common problem — delivering continuous, on-demand audio to a user without manual link-clicking; (c) express market pressure evidenced by Real's 1995 "music on demand" marketing; (d) predictability — the references used conventional components (a searchable database, a playlist, a media player, an HTTP server) in conventional ways; (e) KSR's "finite number of identified, predictable solutions" — as the district court held, "Each of Friskit's claims achieved sequential playback by choosing one of three options—the network server module, the search module, or the media player module—to control the client in ways analogous to the prior art." (District court SJ order, Doc. 806, https://www.courtlistener.com/docket/[4165499/806](https://assignmentcenter.uspto.gov/search/patent/reelFrameDetail?reelFrame=4165499-0806)/friskit-inc-v-realnetworks-inc/authorities/)

3.2 Dependent claims 2–17 (as summarized in the prior section)

3.3 Rating-system, discovery, and search-database claims

The '199 specification's "embodiments" covering (i) back-end browser-driven discovery of media links, (ii) programmatic verification and metadata extraction, and (iii) a rating system, all track the '648/'467 subject matter litigated:

• Discovery / crawling claims — routine, programmatic HTML parsing by a headless browser was standard web-crawler practice (AltaVista, Lycos, Yahoo contemporaneously), and using a browser's DOM/API on the back end is a predictable application of a known tool.
• Verification / metadata-extraction claims — loading a URL into a media player and reading back metadata is the ordinary use of the player's API (Real's Oct. 1995 API announcement expressly contemplated content providers embedding instructions and obtaining playback functions programmatically).
• Rating-system claims — Logan's usage log returned to the server to "adaptively modify the subscriber's preferences based on actual usage" is the disclosure of a server-side preference/rating update loop; Lang discloses profile-based personalization. Combining a user-supplied rating (an explicit input) with Logan's usage-log-based adaptive update is a predictable substitution of one known feedback signal for another.

For these, the primary combination is Logan ('827/'076) + Lang ('799/'214/'161) + RealPlayer/RealJukebox, with Winamp/minibrowser supplying the client-side search-plus-player integration.

4. Why a POSITA would have been motivated to combine

The record supplies four independent motivations, any one of which is sufficient:

1. Same field of endeavor and same problem. All references are network delivery of digital media and aim at removing manual link-clicking. KSR, 550 U.S. at 417 ("familiar elements according to known methods").
2. Market pressure / design need. Real's own October 1995 marketing promised "music on demand," "plug their own interface," and "browse, select and play back audio … on demand, in real time" — i.e., the industry was actively steering toward the claimed integration. The district court's "scope and content of the prior art" finding captures this (https://storage.courtlistener.com/harvard_pdf/1871910.pdf).
3. Finite, identified, predictable solutions. Once one accepts search + playlist + player, there are only three actors who could control sequential playback — server module, search module, or media player — and the prior art disclosed all three. Picking among a closed list of predictable alternatives is obvious under KSR, 550 U.S. at 421.
4. Interoperability / enablement. Java, JavaScript, and ActiveX were "widespread," so the claimed server→client control mechanism was implementable without undue experimentation; the references were designed to interoperate (M3U playlists were the lingua franca linking web pages to players). Cf. KSR on "a reasonable expectation of success."

Friskit's own characterization — that it "deliver[ed] the glue to put existing technologies together into a single application" — is effectively an admission of the KSR combination, and the Federal Circuit said so directly (slip op. at 9).

5. Secondary considerations (objective indicia)

The previously-generated docket section establishes that Friskit pressed commercial success, copying, and long-felt need, and that both courts rejected them:

• Copying requires "the replication of a product," and "the mere assertion of infringement does not establish the nonobviousness" of the claim (district court order, https://www.courtlistener.com/docket/[4165499/806](https://assignmentcenter.uspto.gov/search/patent/reelFrameDetail?reelFrame=4165499-0806)/friskit-inc-v-realnetworks-inc/authorities/).
• The Federal Circuit: secondary considerations "do[] not necessarily overcome a strong showing of obviousness, as was made in the present case" (citing Leapfrog and Pfizer).
• Nexus problem: Friskit's commercial-success evidence was tied to its service, not shown to flow from the specific "programmatic control" limitation — so it lacks the required nexus.

Net: secondary considerations do not rescue the claims.

6. Conclusion for US 6,484,199

On the prior-art record actually developed and judicially credited in Friskit v. RealNetworks, the claims of US 6,484,199 (which share the same specification as the adjudicated sibling patents) would be obvious under § 103:

• Claim 1 is obvious over Winamp (integrated minibrowser) + mp3.com/IUMA.com + IUMA Radio/M3U, and alternatively over Logan ('827) + Lang + Winamp.
• Dependent claims 2–17 are obvious over the same combination plus the MP3.com/Winamp search-and-playlist functionality and the RealPlayer API/programmatic-control art; claim 15's "availability determination" is the weakest mapping on the record I have, though automated availability handling was ordinary.
• The rating/discovery/verification/metadata subject matter is obvious over Logan's usage-log-driven adaptive preferences + Lang's profile-based selection + routine back-end browser/crawler practice.

No secondary consideration overcomes the strong prima facie showing.

7. Uncertainty flags and one contradiction with the earlier sections

1. Contradiction flagged (material). The prior "Litigation summary" (§ "Important nuance regarding the '199 patent in this case") and my §3 above agree on the substance, but the earlier "Patent summary" §3 briefly states that the Friskit litigation "references … '648 claims 49 and 52" — those are '648 claims, not '199 claims. Reconciling: the narrowed eight litigated claims came from the '467, '648, '275, and '628 patents; no '199 claim was among them. So while '199 was pleaded as a patent-in-suit, its claims were not directly adjudicated. This obviousness analysis is therefore an application of the adjudicated reasoning to '199's claims, defensible because the family shares one specification, but it is not itself a holding on '199.
2. Claim-set uncertainty. I have verbatim text only for '199 claim 1 and dependents 2–17 and the opening of claim 18; the middle operative language of claim 18 was truncated in my source, and I cannot confirm the identity or scope of every independent claim (candidates around claims 49/52 belong to '648, per the record, not '199). My mapping above is therefore precise for claim 1 and "as summarized" for the rest.
3. Prior-art sourcing. "IUMA Radio," "Winamp minibrowser," "mp3.com," and "IUMA.com" are system/printed-publication prior art proven by the defendant's exhibits (e.g., "winamp-iuma-copy-paste-to-playlist.avi," "winamp-mp3-dot-com-adam-pfeffer.avi"); I have not independently re-verified each exhibit. Logan and Lang are patent references whose citations I confirmed via their own front pages and later-case citation tables, not via the '199 patent's own "References Cited" field, which was not in the page text furnished to me.
4. Date caveat. The task header says "April 26, 2026" while the patent page in my full text was fetched "2026-09-28." I do not treat this as altering the priority date (Jan. 24, 2000) or the § 103 analysis; I flag the discrepancy rather than auto-correct it.

Primary sources: Federal Circuit slip op., No. 2007-1583, http://cafc.uscourts.gov/sites/default/files/opinions-orders/07-1583.pdf ; Fed. Cir. opinion, 306 F. App'x 610, https://www.courtlistener.com/opinion/209377/friskit-inc-v-real-networks-inc/ ; district court SJ order (Doc. 806), https://www.courtlistener.com/docket/[4165499/806](https://assignmentcenter.uspto.gov/search/patent/reelFrameDetail?reelFrame=4165499-0806)/friskit-inc-v-realnetworks-inc/authorities/ ; district court opinion PDF, https://storage.courtlistener.com/harvard_pdf/1871910.pdf ; US 5,721,827, https://insight.rpxcorp.com/patent/US5721827A ; Google Patents, US6484199B2, https://patents.google.com/patent/US6484199/en .