Commitments and Contingencies	12 Months Ended
Mar. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 16. Commitments and Contingencies From time to time, the Company is involved in legal and administrative proceedings and claims of various types. In some actions, the claimants seek damages, as well as other relief, which, if granted, would require significant expenditures. The Company records a liability in its consolidated financial statements for these matters when a loss is known or considered probable and the amount can be reasonably estimated. The Company reviews these estimates each accounting period as additional information is known and adjusts the loss provision when appropriate. If a matter is both probable to result in liability and the amount of loss can be reasonably estimated, the Company estimates and discloses the possible loss or range of loss. If the loss is not probable or cannot be reasonably estimated, a liability is not recorded in its consolidated financial statements. Thoratec Matters The Company has been involved in two ongoing patent infringement actions against Thoratec Corporation (“Thoratec”), a subsidiary of Abbott Laboratories (“Abbott”) for the sales and marketing of Thoratec’s Heartmate PHP™ pump in 2016. In August 2021, the Appellate Court (the Court of 2nd Instance) in Düsseldorf affirmed that Thoratec infringes both patents. The Company can now enforce the judgment in one case by seeking a court ordered injunction if Thoratec sells Heartmate PHP™ in Germany. Thoratec had appealed the second case to the Federal Court of Justice (the Court of 3rd and Last Instance) and in January 2022, Thoratec withdrew its appeal. These actions relate solely to Thoratec’s ability to manufacture and sell its PHP product in Europe and have no impact on the Company's ability to manufacture or sell its Impella® line of medical devices. The actions do not expose the Company to liability risk, except under local German law, which requires a losing party in a proceeding to pay a portion of the other party’s legal fees. Maquet Matters The Company has been litigating certain patents owned by Maquet Cardiovascular LLC (“Maquet”) in two separate cases pending in the U.S. District Court for the District of Massachusetts (“D. Mass” or “the Court”) since 2016. In May 2016, the Company filed a declaratory judgment action (the “2016 Action”) alleging that it does not infringe Maquet’s patent. Following the claim construction (“Markman”) order issued in November 2018, and prior to the close of discovery, both parties filed series of motions. On September 30, 2021, the Court granted the Company’s Motion for Summary Judgement (“MSJ”) for non-infringement of the two claims remaining in this case. Maquet moved for reconsideration of the MSJ order, which the Court denied on November 30, 2021. The Court has not entered a final judgement; therefore, the case is not yet appealable to the Federal Circuit. In November 2017, Maquet filed a new action in D. Mass alleging that the Company’s Impella 2.5®, Impella CP®, and Impella 5.0® heart pumps infringe certain claims of another patent in the same family (the seventh patent overall between both cases). The Parties submitted Markman briefs and argued their respective positions in November 2019. A Markman order has not yet issued, and discovery remains ongoing. The asserted patents in both cases expired on September 1, 2020. The Company is unable to estimate the potential liability with respect to the legal matters noted above. There are numerous factors that make it difficult to meaningfully estimate possible loss or range of loss at this stage of the legal proceedings, including the significant number of legal and factual issues still to be resolved in the Maquet patent disputes.

Commitments and Contingencies

12 Months Ended

Mar. 31, 2022

Commitments and Contingencies Disclosure [Abstract]

Note 16. Commitments and Contingencies

From time to time, the Company is involved in legal and administrative proceedings and claims of various types. In some actions, the claimants seek damages, as well as other relief, which, if granted, would require significant expenditures. The Company records a liability in its consolidated financial statements for these matters when a loss is known or considered probable and the amount can be reasonably estimated. The Company reviews these estimates each accounting period as additional information is known and adjusts the loss provision when appropriate. If a matter is both probable to result in liability and the amount of loss can be reasonably estimated, the Company estimates and discloses the possible loss or range of loss. If the loss is not probable or cannot be reasonably estimated, a liability is not recorded in its consolidated financial statements.

Thoratec Matters

The Company has been involved in two ongoing patent infringement actions against Thoratec Corporation (“Thoratec”), a subsidiary of Abbott Laboratories (“Abbott”) for the sales and marketing of Thoratec’s Heartmate PHP™ pump in 2016. In August 2021, the Appellate Court (the Court of 2nd Instance) in Düsseldorf affirmed that Thoratec infringes both patents. The Company can now enforce the judgment in one case by seeking a court ordered injunction if Thoratec sells Heartmate PHP™ in Germany. Thoratec had appealed the second case to the Federal Court of Justice (the Court of 3rd and Last Instance) and in January 2022, Thoratec withdrew its appeal.

These actions relate solely to Thoratec’s ability to manufacture and sell its PHP product in Europe and have no impact on the Company's ability to manufacture or sell its Impella® line of medical devices. The actions do not expose the Company to liability risk, except under local German law, which requires a losing party in a proceeding to pay a portion of the other party’s legal fees.

Maquet Matters

The Company has been litigating certain patents owned by Maquet Cardiovascular LLC (“Maquet”) in two separate cases pending in the U.S. District Court for the District of Massachusetts (“D. Mass” or “the Court”) since 2016.

In May 2016, the Company filed a declaratory judgment action (the “2016 Action”) alleging that it does not infringe Maquet’s patent. Following the claim construction (“Markman”) order issued in November 2018, and prior to the close of discovery, both parties filed series of motions. On September 30, 2021, the Court granted the Company’s Motion for Summary Judgement (“MSJ”)

for non-infringement of the two claims remaining in this case. Maquet moved for reconsideration of the MSJ order, which the Court denied on November 30, 2021. The Court has not entered a final judgement; therefore, the case is not yet appealable to the Federal Circuit.

In November 2017, Maquet filed a new action in D. Mass alleging that the Company’s Impella 2.5®, Impella CP®, and Impella 5.0® heart pumps infringe certain claims of another patent in the same family (the seventh patent overall between both cases). The Parties submitted Markman briefs and argued their respective positions in November 2019. A Markman order has not yet issued, and discovery remains ongoing.

The asserted patents in both cases expired on September 1, 2020.

The Company is unable to estimate the potential liability with respect to the legal matters noted above. There are numerous factors that make it difficult to meaningfully estimate possible loss or range of loss at this stage of the legal proceedings, including the significant number of legal and factual issues still to be resolved in the Maquet patent disputes.