NXP USA Inc v. Impinj Inc

District Court, W.D. Washington·Decided November 4, 2022·No. 2:20-cv-01503·Unknown

Opinion

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4 5 UNITED STATES DISTRICT COURT 6 WESTERN DISTRICT OF WASHINGTON AT SEATTLE 7 NXP USA, INC., and NXP B.V., CASE NO. 2:20-cv-01503-JHC 8 Plaintiffs, ORDER GRANTING MOTION FOR 9 PARTIAL SUMMARY JUDGMENT v. 10 IMPINJ, INC., 11 Defendant. 12 13

14 I. 15 INTRODUCTION1 16 Plaintiffs NXP USA, Inc. and NXP B.V. (collectively, “NXP”) brought this patent- 17 infringement action against Defendant Impinj, Inc. alleging infringement of a group of patents 18 relating to radio frequency identification (“RFID”) technology. Impinj moves for partial 19 summary judgment as to three of these patents, which the parties collectively call the “wafer 20 patents.” Dkt. ## 87 (redacted version of motion), 89 (sealed motion), 234 (supplemental brief). 21 22

1 The Court previously filed a sealed version of this order. See Dkt. # 242. The Court then asked 23 the parties to indicate which portions, if any, of the order must be redacted to protect confidential and proprietary business information. Dkt. # 243. After hearing from the parties, see Dkt. # 245, 246, the 24 Court hereby publishes this redacted version of the order. 1 For the reasons below, the Court GRANTS Impinj’s motion for partial summary 2 judgment. 3 II.

4 BACKGROUND 5 A. The Relevant Technology 6 RFID is a type of contactless wireless communication that uses electromagnetic 7 frequencies to transmit identification information. Dkt. # 216 at 7; see generally Dkt. # 220 8 (technology tutorial). RFID systems typically include a tag, which can be attached to an object, 9 and a reader, which receives information from the chip through radio waves. Dkt. # 216 at 7. 10 The RFID tag wirelessly transmits data to the RFID reader, which the reader can use to identify 11 the object. Dkt. # 220 at 7. A data carrier typically contains some form of electric circuit and a 12 means for transmitting the data to the communication station antenna. Dkt. # 216 at 7. ICs are

13 found not only in RFID products, but in nearly all electronic devices available today. Dkt. # 87 14 at 6. The ICs here are not manufactured (or “fabricated”) individually, but in bulk on a “wafer.” 15 Dkt. # 216 at 8. 16 A wafer is a disc made of a thin slice of silicon, typically 8 to 12 inches in diameter. Dkt. 17 ## 87 at 6; 220 at 14. During fabrication, the manufacturer takes a bare silicon wafer and runs it 18 through various machines that either deposit or remove material. Dkt. # 87 at 6. This addition 19 and removal of material produces layers on the wafer, which in turn produces the ICs. Id.; Dkt. 20 # 87-9 at 1. After ICs have been formed on the wafer, each IC is separated through a process 21 called “singulation” or “dicing.” Dkt. # 87 at 6. During this process, the wafer—which contains 22 hundreds or thousands ICs—is cut apart to form individual ICs, which can then be incorporated

23 into RFID devices or other products. 24 B. The Patents at Issue 1 NXP’s complaint alleged that Impinj infringed eight patents, though the parties have 2 since narrowed their dispute to six patents. Dkt. # 176 at 2 & n.1. This motion for partial 3 summary judgment involves three2 of those patents, collectively, the “wafer patents.” The three 4 wafer patents are United States Patent Numbers 7,456,489 (“the ’489 Patent”), 7,538,444 (“the 5 ’444 Patent”) and 8,415,769 (“the ’769 Patent”). Two of these patents—the ’489 and ’444 6 Patents—relate to the layout of wafers. Both generally concern the arrangement of “control 7 modules” and “exposure fields” on the wafers. Dkt. # 87 at 14–15, 8. The ’769 Patent concerns 8 the “singulation” stage of the wafer-manufacturing process. The ’769 Patent describes the 9 placement of “alignment marks” on a wafer, as well as a “method for separating integrated 10 circuits on a wafer” using an alignment-detecting device and alignment marks. ’769 Patent, 11 8:45–57; id. at 15–16. 12 C. TSMC and the NXP-TSMC Agreement

13 Taiwan Semiconductor Manufacturing Company Limited (“TSMC”) manufactures ICs, 14 including the wafers on which ICs are formed. TSMC fabricates and sells wafers to Impinj. 15 Dkt. ## 87 at 9; 87-9 at 2. TSMC describes itself as a “foundry.” See Dkt. # 1034 at 8 (quoting 16 from TSMC’s website, which states that “TSMC pioneered the pure-place foundry business 17 model and was founded in 1987, and has been the world’s largest dedicated semiconductor 18 foundry ever since.”). Foundries make products based on the design specifications of their 19 customers. See Cyrix Corp. v. Intel Corp., 803 F. Supp. 1200, 1204 (E.D. Tex. 1992) (“Custom 20 product manufacturing, which today is known as ‘foundry’ work, refers to arrangements in 21 22

23 2 Impinj’s initial motion sought summary judgment as to four, not three, patents. Since Impinj filed its motion, the parties have informed the Court that one of the patents, U.S. Patent No. 6,680,523, is 24 no longer at issue. See Dkt. ## 216 at 7 n.2; 176 at 1–2 & n.1. 1 which a semiconductor company makes and sells to its customers integrated circuit products, the 2 designs for which were developed or owned by the customers.”). 3 In 2004, TSMC and Koninklijke Philips Electronics N.V. (“Philips”) executed a

4 Technology Cooperation Agreement (“licensing agreement”). See Dkt. # 89-2. The licensing 5 agreement was extended to NXP in 2006 when NXP was spun off from Philips. Dkt. # 89-3 at 3. 6 The licensing agreement grants TSMC: 7

10 Dkt. # 89-2 at 5. In other words, 11

14 All the patents at 15 issue were filed before this date. 16 D. Relationship between TSMC and Impinj 17 TSMC manufactured and sold all the accused wafers to Impinj during the pertinent 18 period. Dkt. ## 87 at 9; 87-9 at 2; 104 at 11. The parties agree that Impinj designed the ICs on 19 the wafers. Dkt. # 87 at 9. The parties dispute, however, how much Impinj was responsible for 20

21 3

23 24 Dkt. # 89-2 at 5. 1 the design of the wafers themselves. TSMC asserts that Impinj was deeply involved in the wafer 2 design process, instructing NXP about the wafer arrangements that it desired. According to 3 NXP, Impinj’s involvement in this process means that TSMC did not sell Impinj the “product” of

4 a finished wafer. Dkt. # 99 at 16–19. Rather, it sold Impinj only “fabrication services” or 5 “manufacturing capacity.” Id. Impinj responds that TSMC, not Impinj, was mainly responsible 6 for wafer design, though Impinj’s position as to the degree of its involvement has not been 7 consistent throughout this case. See Dkt. ## 214 at 10–11; 216 at 10–11. Impinj nevertheless 8 argues that its involvement in the wafer design process is irrelevant. Dkt. ## 104 at 7–10; 228 at 9 6–10. 10 After TSMC produces the wafers, Impinj then relies on third-party vendors, like STARS 11 Microelectronics (Thailand) Public Company Limited (“STARS”), to singulate (or separate) the 12 individual ICs on the wafer. Dkt. # 87 at 9.

13 E. Procedural History 14 In March 2021, Impinj moved for partial summary judgment. Dkt. ## 87, 89. In its 15 motion, Impinj asserts that TSMC fabricates and sells to Impinj all the wafers accused of 16 infringement. According to Impinj, TSMC is licensed to make and sell products relying on the 17 wafer patents. And because TSMC has a license covering the wafer patents, Impinj says that 18 under the doctrine of “patent exhaustion,” its purchase of a licensed product cannot lead to 19 infringement liability. NXP opposed the summary judgment motion, arguing among other things 20 that Impinj failed to carry its burden to show that there are no genuine issues of material fact as 21 to every element of its patent exhaustion affirmative defense. Dkt. # 99. 22 Magistrate Judge S. Kate Vaughan recommended deferring ruling on the motion for

23 partial summary judgment to allow additional time for discovery. Dkt. # 126. The Court 24 adopted that recommendation. Dkt. # 133.

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