Arlington Technologies LLC v. RingCentral, Inc.

Arlington Tech. · United States District Court for the District of Delaware · March 10, 2026 · No. 1:25-cv-00613-JCG

Summary

The opinion and order addresses RingCentral, Inc.’s Rule 12(b)(6) motion to dismiss Arlington Technologies LLC’s patent-infringement claims involving eight asserted patents and various RingCentral products. The court grants the motion in part and denies it in part, including dismissing Counts I–IV with leave to amend based on deficiencies in the allegations concerning Apache Kafka and Apache Kafka streams.

Holdings

  1. A patent-infringement complaint must include factual allegations connecting the accused product to the elements of an asserted claim and must provide fair notice of how infringement is alleged; merely reciting claim elements and conclusorily asserting that the accused product contains them is insufficient.
  2. Counts I-IV did not satisfy the pleading standard because the amended complaint failed to plead clearly how RingCentral's accused products used Apache Kafka or Apache Kafka streams in a manner that infringed the asserted patent claims.
  3. Counts V, VI, and VIII plausibly stated claims for direct patent infringement and survived the Rule 12(b)(6) motion.
  4. To plead induced infringement, a plaintiff must plausibly allege direct infringement, the defendant's knowledge of the patent and that the induced acts constitute infringement, an affirmative act encouraging infringement, and specific intent to encourage another's infringement. Counts V, VI, and VIII satisfied that standard.
  5. A contributory-infringement claim requires allegations that the defendant sold or offered to sell a component especially made or adapted for infringing use, knowing of that use, and lacking substantial non-infringing uses. Counts V, VI, and VIII adequately pleaded contributory infringement.
  6. At the pleading stage, a willful-infringement theory may proceed where the allegations plausibly show that the accused infringer was aware of the patent, continued infringing after learning of it, and knew or should have known that its conduct amounted to infringement. The allegations for Counts V, VI, and VIII met that standard.
  7. The court granted Arlington Technologies leave to file a Second Amended Complaint to attempt to cure the pleading defects.

Questions Presented

  1. Whether Counts I-IV plausibly pleaded direct, induced, and contributory patent infringement where the allegations concerning RingCentral's use of Apache Kafka and Apache Kafka streams were unclear and inadequately connected to the asserted claims.
  2. Whether Counts V, VI, and VIII plausibly pleaded direct infringement by identifying the accused products and explaining how they allegedly met the elements of asserted patent claims.
  3. Whether Count VII plausibly pleaded direct infringement where the amended complaint referred to the wrong patent claim and included an incorrect patent exhibit.
  4. Whether the allegations for Counts V, VI, and VIII plausibly pleaded induced infringement, including knowledge, affirmative acts, and specific intent.
  5. Whether the allegations for Counts V, VI, and VIII plausibly pleaded contributory infringement and willful infringement, and whether the demand for enhanced damages could be stricken under Rule 12(f).

Disposition

other

Cases Cited (23)

  • Ashcroft v. Iqbal, 556 U.S. 662, 664, 678 (2009)(followed)
  • Bell Atl. Corp. v. Twombly, 550 U.S. 544, 555-56, 570 (2007)(followed)
  • Golden v. Apple Inc., 819 F. App'x 930, 930-31 (Fed. Cir. 2020)(followed)
  • Bot M8 LLC v. Sony Corp. of Am., 4 F.4th 1342, 1352-53 (Fed. Cir. 2021)(followed)
  • Disc Disease Sols. Inc. v. VGH Sols., Inc., 888 F.3d 1256, 1260 (Fed. Cir. 2018)(followed)
  • Boston Sci. Corp. v. Nevro Corp., 415 F. Supp. 3d 482, 489-90 (D. Del. 2019)(followed)
  • SIPCO, LLC v. Streetline, Inc., 230 F. Supp. 3d 351, 353 (D. Del. 2017)(followed)
  • WiTricity Corp. v. Momentum Dynamics Corp., 563 F. Supp. 3d 309, 328 (D. Del. 2021)(distinguished)
  • Dermafocus LLC v. Ulthera, Inc., 201 F. Supp. 3d 465, 469 & n.3 (D. Del. 2016)(followed)
  • Carborundum Co. v. Molten Metal Equip. Innovations, Inc., 72 F.3d 872, 878 (Fed. Cir. 1995)(analogized)

Showing top 10 of 23.

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